Manning Game Used Colt's Jersey

[beantown]

I noticed this jersey and thought that Manning wore a size 50...has anyone seen him wear a size 52?

http://cgi.ebay.com/2005-Peyton-Manning-Game-Worn-Colts-Jersey-Auto_W0QQitemZ130028576465QQihZ003QQcategoryZ86829 QQrdZ1QQcmdZViewItem