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 Olympic Themed Jersey Worn/signed By #15 Michael Latta2013-14 Hershey Bears Jersey Worn/signed By #19 Joel RechliczLuton Town 1987 Adidas Football Home Shirt Vintage Soccer Jersey Original Hershey Bears Olympic Themed Jersey Worn/signed By #26 Brandon SegalHershey Bears Groundhog Day Jersey Worn/signed By #7 Steve OleksyHershey Bears Military Jersey Worn By #28 Dmitry OrlovHershey Bears St. Patrick's Day Jersey Worn/signed By #5 Tyson StrachanHershey Bears Military Jersey Issued To #28 Dmitry OrlovJuventus Turin 1995 1996 Football Shirt Soccer Jersey Trikot Kappa Longsleeve Rare! 1996 Dan Marino Miami Dolphins Game Issued Used Worn Wilson JerseyVtg Nike Authentic Alabama Crimson Hydrocool Game Used Worn Tide Football JerseyArsenal 2005\\2006 Cl Player #14 Henry Home Nike Shirt Jersey Maillot FootballWalter Payton Chicago Bears Autographed Football Jersey Gai Authentication 2013 Topps Supreme Nfl Logo Shield Patch Jersey Julio Jones 1/1 Wow Washington Huskies Authenic Game Football Jersey Jake Locker #10Eddie Lacy Signed Autographed Packers Green Jersey Gtsm Lacy Holo CoaLiverpool Fc Home Jersey Shirt 1987/1988 Vintage Retro English Football - LBroncos 2004 Signed Team Issued Jersey - Rod Smith #80 Calvin Johnson Detroit Lions Autographed Blue Custom Made Football Jersey Coa XlJuventus 1997-1998 Home Kappa Football Soccer Shirt Jersey Top SmallDesean Jackson Autographed Signed Psa/dna Game Issued Jersey Philadelphia EaglesKnowshon Moreno Autographed Denver Broncos Throwback Game JerseyBo Jackson Autographed Signed Auburn Tigers Blue Jersey Jsa Witness #w563743Broncos 1999 Signed Team Issued Jersey - Terrell Davis #30Game Worn 2013 Arkansas Razorbacks Football Nike Jersey - Rb Alex CollinsJj Watt Houston Texans Autographed Blue Custom Made Football Jersey Coa Xl1995 Umbro #10 Colombia Soccer Jersey Mexico Usa Valderrama Football Shirt Vtg L2009~topps Tt~dan Marino~game-used Jersey~patch~autograph~bgs 9.5 Psa 10~4/5~spJoe Montana Autographed Signed 49ers White Stat Jersey Montana HologramPittsburgh Steelers Le'veon Bell Signed Throwback Jersey W/ Jsa Coa2013 National Treasures Clyde Bulldog Turner Hof Jersey Patch Sp# 4/5 Bears Wow!Vtg Umbro Ronaldo Inter Milan Soccer Jersey Football Shirt Mexico Usa Brazil XlFramed Jerry Rice Autographed Signed San Francisco 49ers Stat Jersey Psa/dna CoaEddie Lacy 2013 National Treasures Jumbo Rookie Autograph Jersey #43/99 Packers1990 Mike Pitts Game Used/worn Jersey Autographed Philadelphia EaglesJerry Rice Lewis Warner Elway Peyton Manning Game-worn Jersey Patch /25 PlaybookPittsburgh Steelers Antonio Brown Signed Throwback Jersey W/ Jsa CoaOfficial Chelsea Football Shirt-jersey Large Man Di Santo 9 Fa Community Shield.Broncos 1996 Game Issued Home Jersey - Lionel Washington #482013 National Treasures Bears Tim Jennings Colossal Jersey Shield 1of1!Chicago Bears # 34 Walter Payton Reebok Jersey Sz 52 *never Worn* W/ Tags NflVtg 50's Antique Champion Durene Game Used Worn Football Jersey Penn State ColorJared Allen Bears Nfl Jersey, 2014 Home Onfield New With TagsLiverpool Adidas 2006-2008 #14 Alonso Home Football Jersey Shirt Trikot The Reds2013 National Treasures Josh Sitton Jumbo Jersey #ed 6/6 Prime Patch PackersNwt Gary Payton Jersey #20 Seattle Super Sonics Men's Adult Medium2013 Panini Playbook Peyton Manning Rare Jumbo Jersey/ Patch 5/10 Denver BroncosRob Gronkowski New England Patriots Autographed White Custom Football Jersey CoaGale Sayers Chiacgo Bears Autographed Blue Custom Jersey JsaMitchell Ness M&n Seattle Supersonics Gary Payton Authentic Jersey Size 46Peyton Manning Signed Denver Broncos Orange Jersey W Coa Hologram Autograph Vols2013 National Treasures Richard Sherman Chancellor Thomas Seahawks 4 Jersey /992010 Topps Triple Threads Booklet Jersey /27 Dan Marino Joe Montana John Elway New England Patriots Tom Brady Pro-bowl Jersey Size 50Germany 13 Thomas Muller Adizero Player Version Football Shirt Soccer Jersey98' Reebok Valderrama #10 Colombia Soccer Jersey Mexico Usa Football Shirt Vtg M1979-80 Hershey Bears Game Worn Issued Ahl Hockey Jersey Calder Cup Tony Dorsett Signed & Framed Vintage Dallas Cowboys Nfl Jersey Aaron Rodgers Signed & Framed Green Bay Packers Nfl Jersey2007 Philadelphia Eagles Game Used/worn Jersey Mike Patterson Coa Meigray