My Pitbull zues redboy jocko and termite.. I also have a razors edge, bully, termite and american bulldog #redboyjocko #bloodlines #gamedogsTHE ABSOLUTE BEST THING I HAVE EVER BOUGHT FOR MY DOGS! https://amzn.to/2LWnZCdMERCH: https://www.teespring.com/stores/batt... If you are considering adding a new furry member to your family, specifically a Pitbull puppy, the first step is to find reputable breeders or sellers in your area. With so many op...MIDNIGHT ANGEL - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.This breeding was by far the best Redboy-Jocko out cross, and out of this liter came the most influential dog of all the Redboy-Jocko dogs. The dogs name was Yellow.? Yellow was born in September of 1983. David Tant and Carl Crews bought Yellow for $800.00 dollars. At the age of 14 months, Yellow won his first match.Heavy Paladin / Redboy - Jocko - Jeep / Bolio - Tombstone. 359. 0. ... Cedarbrook kennels Old line inbred macho manga kino cocoa. 279. 1. Oct 25, 2022 4:03pm by Jeep I .Tom Garner - Current Stud Dogs. "Welcome to Tom Garner Kennels, your #1 source for the highest quality pit bulls available on the planet today. We have produced more noteworthy dogs and satisfied customers in the past 45 years than any other Pit Bull breeding kennel on the planet. The APBT breed standard stipulates that our dogs must be ...#TERMITE #JOCKO #REDBOYSUBSCRIBE TO OUR ONLY FANS PAGE FOR EXCLUSIVE CONTENT & OPPORTUNITIES!https://onlyfans.com/readyredkennelsSUBSCRIBE & LIKE!! DON'T FOR...Common stock dividend distributable refers to stock dividends that have yet to be handed out. They are usually found on a balance sheet under the equity section for the business be...Emirates announced that it would suspend most passenger flights by Wednesday as demand for air travel evaporates amid the global coronavirus pandemic. Emirates, the Dubai-based air...pitbull redboy bloodline. pure redboy jocko pups. redboys amstaffs. colrado. redboy n gator pitbulls for sale. This is the family website for the Durdy familyHard Work Pays Off Just Gotta Believe 💪😈Contact Me on Social Media 📲 Instagram- Marcos5ii Snapchat- Marcosballer12Facebook- Marcos MartinTik Tok- MarcosTV...Pitbull puppies. Rednose pitbull puppies for sale Groomed, Dewormed, and Up to date on shots. $400 males $450 females Contact Sean... Pets and Animals Canyon Lake 450 $.call us: (225) 223-9711 titan kennels. where legends are bornCh Chavis Jocko POR A.P.B.T#pitbulls #gamedog #pitbulllove #dog #pitbull #americanpitbullterrier #workingdog #chicolopez #bulldog #apbt #apbtinfo #shorts REDBOY/JOCKO dogs and crosses warning NOTICE: All the information on this web page are for entertainment purposes (fictional) and used confidential. Persons who do not agree with the material enclosed on the page should exit immediately. Pitbull puppies. Rednose pitbull puppies for sale Groomed, Dewormed, and Up to date on shots. $400 males $450 females Contact Sean... Pets and Animals Canyon Lake 450 $.tight bred redboy/ jocko/ bolio/ tombstone puppy - YouTube MILE HI KENNELS! HOME OF THE REDBOY,JOCKO, JEEP, RASCAL, ELI, BRED. Thread ELI/BOLIO with a touch of JEEP/REDBOY pups | Pit Bull. American Pitbull Terrier RedBoy Jeep Jocko BloodLine - Staten. Redboy jocko bolio frisco - Ar level equivalent to dra …call us: (225) 223-9711 titan kennels. where legends are born Team Adams Kennels breeds American Pit Bull Terriers for conformation, weight pulling, high-jump and agility and treadmill racing. Our dogs are also great companions with exceptional behavior. Some of our dogs have proven to be therapy and service dogs. Sep 15, 2014 · Rast’s called Queenie and from that litter came Jocko, Argo, Pearl, Apple and a few others good ones. Mr. Chavis ended up with Jocko and that was the beginning of the famous Red Boy/Jocko bloodline. Mr. Chavis campaigned with Jocko and he looked to be unbeatable due to the inherited trait of Hank’s back end style. This is an excellent cross that encompasses the tightest buck with the best Hammer - Hollingsworth blood to be found. This breeding id 50% Bolio-Tombstone and 50% Redboy-Jocko just the way we like it. This female is the future of my kennel. Call Jose at (281)900-8327. (281)900-8327 Jose [email protected] Sale Bolio Redboy Jocko Pups. ahmadrahjr member 4 years. Miami, Florida. Bolio Redboy Jocko puppies for sale serious inquiries only ... Free. clrktf1369 member 5 ... APBT / ADBA / UKC / ABKC / NKC Pedigree Pitbull's The Real American Pitbull Terrier, Adults & Puppies for sale... $450 Pitbull Puppy Needs A Loving Home Super Smart . jcqzz547 ...Emirates announced that it would suspend most passenger flights by Wednesday as demand for air travel evaporates amid the global coronavirus pandemic. Emirates, the Dubai-based air...Katie Bell Pedigree Information http://apbt.online-pedigrees.com/modules.php?name=Public&file=printPedigree&dog_id=778374DOUBLE A - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES. Ready Red Kennels, New Orleans, Louisiana. 2,958 likes · 58 talking about this · 14 were here. Home of the best Redboy/Jocko dogs on the planet. We specialize in breeding Redboy Jocko as well as Heavy Paladin / Redboy - Jocko - Jeep / Bolio - Tombstone. 359. 0. ... Cedarbrook kennels Old line inbred macho manga kino cocoa. 279. 1. Oct 25, 2022 4:03pm by Jeep I .Scratch And GO Kennels is a small Hobby kennel based entirely off of JEEP through his best two offspring FLOYD and TAB.. Check the FOR SALE page for current and coming breedings.Pedigree Information http://apbt.online-pedigrees.com/modules.php?name=Public&file=printPedigree&dog_id=560258Pit Bull The Pit Bull Bible Red Dog Redboy Jocko Bloodline History Downloaded from dev.mabts.edu by guest KERR DEMARCUS The First Time I Saw Her Face HarperCollins Carl Semencic's classic book about these unique dog breeds is finally back in print, with a new preface by the author. Whether you look upon dogfighting as a sport or asView the Ped. bloodline: REDBOY/JOCKO. Ready Red's LIL TRIPLE A. APBT BULLDOGS! At Stud $1200. (504) 756-8739. View the Ped. bloodline: JEEP. Ready Red's LIL …424 likes, 8 comments - marcos5ii on May 15, 2023: "MTVG’s Bella Redboy Jocko Line #dogs #motivation #dedication #hardwork #pitbulls #ame ...Sugar Soldier (Male)The Redboy Jocko Pitbull breed is a popular working and sporting dog breed known for its loyalty, athleticism, and intelligence. This breed is a good choice for those looking for a dog that excels ...The Red Boy bloodline has been bred since the late 1800s and is still very popular today. The breed was originally bred by Earl Tudor and Maurice Carver and has a long and impressive history. This bloodline influenced the American Pit Bull Terrier. Various individuals contributed to the preservation of the line.carverboy1 Big Dog. Red Boy was the result of a father/daughter breeding of Teal's Jeff and Mc Leod's Susie Q Gal. Teal's Jeff was off of Teal's Sarge bred to Teal's Lou. Teal's Sarge was a pure Colby dog out of Colby's Dime bred to Colby's Margie. This combination of Red Boy/Cleo had produced top quality proven brood females, who in …Public group. 718 members. Join group. About. Discussion. Events. Media. More. About. Discussion. Events. Media. Jocko Jeep RedBoy Pitbulls. Join groupHollimgsworth's Bull, Hollingsworth's Dolly, and Hollingsworth's Polly equalling 50%, and the rest Redboy-Jocko through Yellow, Gainey's Jr, and Roho. Again, this breeding puts …Hello, and welcome back to What’s Cooking?, the open thread where you get to share your brilliant thoughts, advice, recipes, and opinions on all things food-related. Today I want t...Machobuck.com. We would like to think we have some of the best bred American Pit Bull Terriers in the world. We specialize in the Gr.Ch.Mayday (ROM) - Gr.Ch.Buck (ROM) crosses. We have PROVEn redboy-jocko and Bolio-Tombstone dogs that are secons to none.LiL Mama Pedigree Information http://apbt.online-pedigrees.com/modules.php?name=Public&file=printPedigree&dog_id=709669Situs slot habanero deposit 10k juga menyediakan slot demo habanero mirip asli dan slot demo habanero paling lengkap. Rekomendasi Habanero Slot Paling Gacor. Memilih permainan habanero slot yang tepat adalah salah satu kunci utama untuk meraih keuntungan yang besar. Berikut ini akan kami berikan daftar rekomendasi habanero dengan tingkat ...Pitbull Terrier Redboy/Jocko * Mayday dog * ADBA Registered. American Pitbull Terrier The real deal very good with kids and people papers in hand call or text 678-. Pets and Animals Locust Grove 600 $.(504) 756-8739. View THE PED. Ready Red’s Pegasus is a Super Good Bulldog ! He’s now standing at stud! If you want all around dogs he is your go to! Pegasus is about 62.5% …We are purist when it comes to this breed. The dedication that Pat Patrick, Mr.Hollingsworth, and Hargrove showed to the Bolio-Tombstone line of dogs is appreciated. The same can …MIDNIGHT ANGEL - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.BIG TEXAS - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.LIL MAYDAY - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.347K subscribers in the pitbulls community. Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX TeslaFirehouse kennels is a small kennel located in upstate, South Carolina. We are devoted to breeding and producing, qaulity and performance bred pitbulls. Our dogs are based on some of the purest Chinaman, jeep/redboy/jocko blood, and there crosses. No dogs are bred or sold for any illegal and inhumane activity. No dogs are sold in violation of ... MUDDY WATERS - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES. LIL MAYDAY - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.READY RED'S DOG STOCKS MALES bloodline: REDBOY JOCKO BOLIO TOMBSTONE Ready Red's TROUBLE MAN At Stud $1200 (504) 756-8739 View the Ped bloodline: BOLIO Ready Red's LITTLE NENO At Stud $1200 (504) 756-8739 View the Ped bloodline: REDBOY/JOCKO Ready Red's LIL TRIPLE A At Stud $1200 (504) 756-8739 View the Ped bloodline: JEEP Ready Red's LIL SCRAPPY AtWelcome to We Royalty Kennels, your #1 source for the highest quality pitbulls available in the southeast. We are a family owned ADBA registered American Pitbull Kennel located in central Florida with 30 years breeding experience. All our dogs are people friendly, intelligent,stable,athletic and courageous! We are preserving the Redboy-Jocko Bolio-Tombstone,Jeep Bullyson bloodlines for ...The breeding of Razor Edge Pitbulls is specifically for companionship. Although years ago, people wanted them as racing and fighter dogs. Their demeanor is better than that of a typical Pitbull or Bully because breeders frequently blend their bloodline with an American Bully or Mastiff. Dog lovers adore them for their sweet nature and social ...My Pitbull zues redboy jocko and termite.. I also have a razors edge, bully, termite and american bulldogTHESE STUDS ARE VERY PROVEN DOGS & PRODUCERS AND ARE SOME OF THE VERY BEST. PURE RED BOY, PURE TANT, JEEP/RASCAL & PIT ISLAND FAMILY DOGS IN THE WORLD! ALL DOGS BEING OFFERED AT STUD ARE FAMILY DOGS, HUNTING DOGS, A.D.B.A CONFORMATION SHOW DOGS, TRIAL AND AGILITY DOGS AND ALL-AROUND BULLDOGS. NO DOGS ARE BEING OFFERED AT STUD FOR ANYTHING ...Picking out a good reference for a job application is tough. It might seem easiest to pick a former boss who will give you a glowing review, but the Wall Street Journal recommends ...Meerkat Habitat and Diet - Meerkat habitat stretches across the Kalahari Desert. Learn about meerkat habitat and find out about the meerkat hunt and meerkat diet. Advertisement Pri...Machobuck.com. We would like to think we have some of the best bred American Pit Bull Terriers in the world. We specialize in the Gr.Ch.Mayday (ROM) - Gr.Ch.Buck (ROM) …Nov 21, 2009 · RedBoy/Jocko Crosses The Red Boy blood while contributing greatly to gameness in a line also has a reputation of producing a dumber than average dog, hence the term dumb game. This becomes more apparent when higher percentages of this bloodline are used. YOUNG MALES - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.THE PIT ISLAND FAMILY OF DOGS HAVE BEEN MAKING THEIR OWNERS PROUD TO FEED THEM FOR YEARS AND WILL CONTINUE TO DO SO FOR GENERATIONS TO COME. FOR ALL THE PEOPLE … He will be bred into two of his daughters we hand-picked and kept: RUTHLESS II and BABY CAKES, fine examples of our line. Both of them have been bred into MATAYGO before and produced excellent dogs! Don't miss your last chance to own a DOUBLE or TRIPE bred MATAYGO pup. View MATAYGO'S pedigree, the best dogs of modern times up close. 516 posts · Joined 2009. #3 · Apr 27, 2009. redboy jocko and jeep are all different lines, they are game lines that originated with pit dogs im sure someone mor knowledgeable can help you with the history but i personally love these type of dogs i own a jeep female myself. lots of energy deffinately not a dog you should own if your lazy ...Books to change your life, according to Jocko Willink, Ines Ruiz, Sharran Srivatsaa, Gail Corder Fischer, Kenny Rueter, and Trevor Turnbull. By clicking "TRY IT", I agree to receiv...DOUBLE A - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.The Red Boy bloodline has been bred since the late 1800s and is still very popular today. The breed was originally bred by Earl Tudor and Maurice Carver and has a long and impressive history. This bloodline influenced the American Pit Bull Terrier. Various individuals contributed to the preservation of the line.Ch Chavis Jocko POR A.P.B.T#pitbulls #gamedog #pitbulllove #dog #pitbull #americanpitbullterrier #workingdog #chicolopez #bulldog #apbt #apbtinfo #shorts Time: 1.05.2012 Author: zainiloc Chinaman jeep redboy jocko pitbull for sale Redboy/Jocko pit bull puppies for sale. Hardy dogs jeep redboy pitbulls by nealthjr2 5,107. Redboy and chinaman pitbull by cmickens24. Redboy jocko, chinaman kennels - XT.PL - Darmowe domeny i aliasy w. ... For Sale: Puppies. These lines consist... READY RED'S DOG STOCKS MALES bloodline: REDBOY JOCKO BOLIO TOMBSTONE Ready Red's TROUBLE MAN At Stud $1200 (504) 756-8739 View the Ped bloodline: BOLIO Ready Red's LITTLE NENO At Stud $1200 (504) 756-8739 View the Ped bloodline: REDBOY/JOCKO Ready Red's LIL TRIPLE A At Stud $1200 (504) 756-8739 View the Ped bloodline: JEEP Ready Red's LIL SCRAPPY At Ready Red Kennels, New Orleans, Louisiana. 2,958 likes · 58 talking about this · 14 were here. Home of the best Redboy/Jocko dogs on the planet. We specialize in breeding Redboy Jocko as well as LIL MAYDAY - REDBOY-REDBOY JOCKO-ELI CARVER. SONIC BOOM. T BOY’S BOB FROZEN SEMEN. BIG TEXAS. DOUBLE A. LiL DEX. LIL MAYDAY. PEANUT. YOUNG MALES.Pivot Bio makes fertilizer — but not directly. Its modified microorganisms are added to soil and they produce nitrogen that would otherwise have to be trucked in and dumped there. ...LiL Mama Pedigree Information http://apbt.online-pedigrees.com/modules.php?name=Public&file=printPedigree&dog_id=709669Hard Work Pays Off Just Gotta Believe 💪😈Contact Me on Social Media 📲 Instagram- Marcos5ii Snapchat- Marcosballer12Facebook- Marcos MartinTik Tok- MarcosTV... RBK We also breed Bolio & any other bloodline that we see fit for a outcross but the centerpiece will remain Redboy Jocko due to the sentimental value & loyal characteristics of this particular ...Pitbull Terrier Redboy/Jocko * Mayday dog * ADBA Registered. American Pitbull Terrier The real deal very good with kids and people papers in hand call or text 678-. Pets and Animals Locust Grove 600 $.AMPH: Get the latest Amphastar Pharmaceuticals stock price and detailed information including AMPH news, historical charts and realtime prices. Indices Commodities Currencies Stock...True American Pit Bull Terrier. MADAWG ROM PLATINUM VEIN APBT. ( BOLIO REDBOY JOCKO BLOODLINES) No Dogs Bred or Sold For Illegal Use. UPCOMING … REDBOY★REDBOY/JOCKO Park Son★ELI★Snooty pool hall red★Midnight Cowboy . Ademaro Kennels is your source for ★PREMIUM★ American Pitbull Terriers. Join our ... Public group. 718 members. Join group. About. Discussion. Events. Media. More. About. Discussion. Events. Media. Jocko Jeep RedBoy Pitbulls. Join groupNov 21, 2009 · RedBoy/Jocko Crosses The Red Boy blood while contributing greatly to gameness in a line also has a reputation of producing a dumber than average dog, hence the term dumb game. This becomes more apparent when higher percentages of this bloodline are used.
Pedigree Information http://apbt.online-pedigrees.com/modules.php?name=Public&file=printPedigree&dog_id=793758. Chewy commercial with talking dog vase
This breeding was by far the best Redboy-Jocko out cross, and out of this liter came the most influential dog of all the Redboy-Jocko dogs. The dogs name was Yellow.? Yellow was born in September of 1983. David Tant and Carl Crews bought Yellow for $800.00 dollars. At the age of 14 months, Yellow won his first match.TITAN KENNELS > STUDS. Titan Kennels will not sale a dog to anyone who uses animals for fighting and/or illegal means. If you are a dog fighter, please go elsewhere. We attempt to promote the breeds best image and work tirelessly to provide the highest quality care to our animals. If we do not feel you will do the same, we will not sale a pup ...Game bred pitbullsFirehouse kennels is a small kennel located in upstate, South Carolina. We are devoted to breeding and producing, qaulity and performance bred pitbulls. Our dogs are based on some of the purest Chinaman, jeep/redboy/jocko blood, and there crosses. No dogs are bred or sold for any illegal and inhumane activity.Team Adams Kennels He will be bred into two of his daughters we hand-picked and kept: RUTHLESS II and BABY CAKES, fine examples of our line. Both of them have been bred into MATAYGO before and produced excellent dogs! Don't miss your last chance to own a DOUBLE or TRIPE bred MATAYGO pup. View MATAYGO'S pedigree, the best dogs of modern times up close. Garner's Redboy (21 month old double bred son of Cottingham. Tom Garner Kennels, utilizing the unrivaled Garner's Chinaman as our genetic foundation, we created Garner's Frisco, the most prolific producer in the history of our great breed. Your #1 source for the highest quality pit bulls available on the planet today. redboy-redboy jocko-eli carver . home; studs. sonic boom; t boy’s bob frozen semen; big texas; double a; lil dex; lil mayday; ... team adams kennels ... Ready Red Kennels, New Orleans, Louisiana. 2,958 likes · 58 talking about this · 14 were here. Home of the best Redboy/Jocko dogs on the planet. redboy-redboy jocko-eli carver . home; studs. sonic boom; t boy’s bob frozen semen; big texas; double a; lil dex; lil mayday; ... team adams kennels ... Machobuck.com. We would like to think we have some of the best bred American Pit Bull Terriers in the world. We specialize in the Gr.Ch.Mayday (ROM) - Gr.Ch.Buck (ROM) … THE PIT ISLAND FAMILY OF DOGS HAVE BEEN MAKING THEIR OWNERS PROUD TO FEED THEM FOR YEARS AND WILL CONTINUE TO DO SO FOR GENERATIONS TO COME. FOR ALL THE PEOPLE TOO YOUNG TO REMEMBER THE ABOVE PICTURE IS OF LIVINGSTONE “PIT BULL” BRAMBLE AND BOOMER. MR BRAMBLE WAS FEATURED ON THE NOVEMBER ISSUE OF THE GAZETTE IN 1984. MR. HEAVY BURNS REDBOY JOCKO BREEDING WITH RED PITBULLS Upload, share, download and embed your videos. Watch premium and official videos free online. Download Millions Of Videos Online. The latest music videos, short movies, tv shows, funny and extreme videos. Discover our featured content.Arterial insufficiency is any condition that slows or stops the flow of blood through your arteries. Arteries are blood vessels that carry blood from the heart to other places in y...Carolina Kennels Ch Termite ROM. ... Rast’s called Queenie and from that litter came Jocko, Argo, Pearl, Apple and a few others good ones. Mr. Chavis ended up with Jocko and that was the beginning of the famous Red Boy/Jocko bloodline. Mr. Chavis campaigned with Jocko and he looked to be unbeatable due to the inherited trait of … Time: 1.05.2012 Author: zainiloc Chinaman jeep redboy jocko pitbull for sale Redboy/Jocko pit bull puppies for sale. Hardy dogs jeep redboy pitbulls by nealthjr2 5,107. Redboy and chinaman pitbull by cmickens24. Redboy jocko, chinaman kennels - XT.PL - Darmowe domeny i aliasy w. ... For Sale: Puppies. These lines consist... Jocko a Carolina dog himself was a pit intelligent dog with good biting ability, something the Red Boy dogs did not have. Red Boy dogs were extremely game soft mouth dogs, with the exception of Chavis Ch Yellow John. Yellow John went on to produce one of the most honest bulldogs of modern time Tant's Gr. Ch. Yellow.We also breed Bolio & any other bloodline that we see fit for a outcross but the centerpiece will remain Redboy Jocko due to the sentimental value & loyal characteristics of this particular ...Mayday Prime: Owner: Machobuck.com. Comments: Mayday was a monster of hybrid vigor that was half Hollingsworth and half Redboy-Jocko. The breeding that made Mayday Prime and his littermates encompass exactly what Mayday was genetically. It's 50% littermate sisters Hollingsworth's Dolly, Hollingsworths Polly, and, Hollingsworth's Bull, and 50% ….
Popular Topics
- Chiefland farm supply chiefland floridaCode p0430 nissan
- Fort wayne newspapers journal gazettePower outage belvidere il
- Hometown buffet moreno valley californiaWalmart warehouse palestine tx
- Craigslist chicago autos for saleEast orange motor vehicle nj
- Final jeopardy 10 26 23Enamorandonos usa cast
- Bonchon coupons 2023Pathfinder wrath of the righteous nenio questions
- Denis rodman net worthLook up bill serial number