Collectible football jerseys are valued based on several factors: whether they were worn and by which player, whether they were autographed, and what era they're from. A jersey autographed by a famous player and a worn jersey autographed by that player are two completely different things to collectors. Many players autographed limited numbers of promotional jerseys, which were often sold with a certificate of authenticity.

The other big factor is era, either for the team, or within the individual player's career. Numbers no longer in use by a football team are more valuable, especially those from the team's infancy or a big winning season. For individual players, jerseys from college years are often sought-after.

Best of the Web (“Hall of Fame”)

Vintage Football Card Gallery

Vintage Football Card Gallery

This great database of pro and collegiate football cards from the 1950s and 1960s offers scanned images of cards fo… [read review or visit site]

Other Great Reference Sites

Most watched eBay auctions    

Hershey Bears New Years Game Worn Used Issued Authentic Ahl Jersey Stars EakinVtg Adidas United States Usa Usmnt Soccer Jersey Football Shirt Hugo Perez NaslHershey Bears Game Worn Used Ccm Authentic Retro Jersey Flyers Sweden 54 1998 Harrison Denver Broncos Nfl Football Game Worn Football JerseyOregon Ducks 2015 (college Football Playoff) National Championship JerseyAaron Rodgers Signed Green Bay Packers Autographed Jersey JsaNfl Denver Broncos Peyton Manning Nike Super Bowl 50 Game Jersey1994 Rick Mirer Signed Team Issued Seattle Seahawks Football Jersey Rookie YearNike Denver Broncos Peyton Manning Jersey Xl Super Bowl 50 ChampionsOn Field Super Bowl Von Miller Jersey #58 Broncos M L Xl Xxl 3x 4x WhiteVtg Adidas Yugoslavia Soccer Jersey Football Shirt Stojkovic Red Star BelgradeSeattle Seahawks Chris Clemons 2012 Autographed Game Used Jersey Psa DnaAutographed Tom Brady New England Patriots Jersey Signed With CoaOakland Raiders Game Worn Football Jersey #52, Rare!! Beautiful!!!1983 Jim Romano Raiders Game Worn Black Jersey Super Bowl Xviii Champs Mears LoaRob Gronkowski Signed New England Patriots Throwback Jersey Jsa Authentic CoaTom Brady Peyton Manning Philip Rivers 08 Trios Jersey Patch Prime Tag Dirty /75Jason Witten Dallas Cowboys Signed Autographed Football Jersey Ga Coa2013 Logan Ryan Team Issued #26 Nike Navy/home New England Patriots JerseyOn Field Super Bowl Von Miller Jersey #58 Broncos Xl White Autographed 1991 Michael Timpson Game Worn #83 Red New England Patriots JerseyBrett Favre Mvp Autographed/signed Packers Jersey Favre Holo 767862015 Immaculate Football Joe Namath 2 Color Game Worn Patch Jersey # 12/25 Wow!!Nwt Greg Olsen #88 Jersey - Mens Xl 48 Nike Elite Carolina Panthers Super Bowl Marshawn Lynch Game Used Worn Seattle Seahawks Jersey Nfl Nike UniformJason Hewitt Testimonial Signed Steelers JerseyPeyton Manning Autographed Tennessee Volunteers Jersey #16 With Coa Aaron Rodgers Autographed Jersey, Packers, Gai Coa Bo Jackson Signed/autographed Custom Black Football Jersey JsaJack Lambert Pittsburgh Steelers Signed/autographed Hof 90 Jersey Jsa W992530Vintage Adidas Germany Home Shirt Jersey Football Trikot World Cup 1994/96 LPeyton Manning Jersey Super Bowl 50 Patch Mens Xxl 52 Nike New Denver BroncosDenver Broncos Jersey, #18 Manning With Super Bowl 50 PatchAuthentic Chicago Bears Walter Payton Jersey 40 M Mitchell Ness Nfl On Field Nfl Nike Jersey Von Miller #58 Mvp Super Bowl M L Xl Xxl 3x 4x BlueDenver Broncos #18 Peyton Manning Salute To Service Jersey Xl NwtNew England Patriots Autographed Tom Brady #12 Jersey Signed CoaTony Romo Dallas Cowboys Signed Autographed Blue Football Jersey Ga CoaFrance Zidane Soccer Euro 1996 Shirt Jersey Mens Medium Football Low Start Bid!Peyton Manning Autographed Signed Jersey | Colts | Broncos Coa | Jsa AdultPeyton Manning Autographed Denver Broncos Nike Jersey With Gai Coa Size 44Von Miller Denver Broncos Autographed Signed Blue Style Jersey W/coa /On The Field Super Bowl Von Miller Jersey #58 Broncos Xxl White Autographed 2003 Stephen Neal #61 Game Worn Silver Reebok New England Patriots JerseyAaron Rodgers Green Bay Packers Signed Autographed Football Jersey Ga Coa1993 Jerry Rice San Francisco 49ers Game Issued Used Home Wilson JerseyJulian Edelman New England Patriots Signed/autographed Jersey Jsa M45107Peyton Manning Jersey Super Bowl 50 Patch Mens Xl 48 Nike New Denver Broncos NflDenver Broncos Ware Nike Elite Jersey Superbowl Super Bowl Patch Sz 40Vintage Adidas Bayern Munich Munchen Football Shirt Trikot Jersey Rare 1989-91 LDenver Broncos Brock Osweiler Jersey Men's Sz 48Brett Favre Signed Hof Embroidered Jersey Jsa & Favre Coa Packers AutographJoe Namath Los Angeles Rams Mitchell & Ness 1977 Throwback Sz 54 Vintage JerseyVon Miller Jersey Super Bowl 50 Patch Mvp Mens Xl 48 Nike New Denver Broncos NflNike Denver Broncos Peyton Manning On-field Jersey-size Xxl-nice NwtNike Peyton Manning Super Bowl 50 JerseySports Frame Jersey Display Case Jersey Display Case Frame Football Baseball Nike Blue Russell Wilson Seattle Seahawks Football Jersey Youth Medium 12Green Bay Packers Aaron Rodgers Autographed #12 Jersey With Coa & WarrantyNwt Men's Carolina Panthers Kuechly #59 Jersey Sz Xxxl With Super Bowl 50 Patch