Posted By:
BobThe pastel front images are very distinctive from the blue front images and are easily recognizable. There ahouldn't be any problem there.
As far as the 300 subject back question- it is a bit more complicated than that. Generally you are ok with saying that the "high number series cards" (last issued) have the 300 series backs and are therefore tougher to find and more valuable. The problem is apparently the Sporting Life went back and reissued some of the stars of the day and when they did, they used the 300 series backs on them so you find cards of guys like Brown and Matty with both 300 series backs (very rare) and the regular backs. We are talking pastels here. (We won't even get in to the black ink and blue ink backs in one of the series of issued M116s, that's a different subject for another day.
tbob