I've just finished photographing and listing 25 of 50 vintage jerseys in time for Christmas. They're all very plain & simple jerseys, in the old woolen jersey style. Some are branded, some are unbranded and most are in amazing conditon. Prices range from £10-32 and include both short and long sleeved tops. Sizes are clearly stated in armpit to armpit chest measurements and the length down the back from under the collar to the bottom of the hem - I feel this is the best way to measure, rather than just state small or medium. This way you can check them against your own jerseys.
I've added them to my site, but they can also be bought directly if you'd prefer, just send me a PM on here and bank transfer or paypal payment can be arranged.
If you have any questions please ask.
You can view the whole range at http://www.pedalpedlar.co.uk/collections/jerseys