Posted By:
Brad Green
I'm not an expert on W502's... But it seems to me that the best way to tell the difference between the 1928's and the 1931's is the card number on the front along with the SCD Standard Catalog, which have the cards checklisted. But I do know that Lefty Grove only appears in the 1931 W502's, so if you have one of his cards, it's a 1931...