[Exhibitman]

Scans would be very helpful.

There are three varieties of counterfeits of the postwar issues that I know of:

1. Printed on gray chipboard and feel and look low quality. They originate in the 1970s or 1980s.
2. Printed on slightly thicker stock than a genuine card that has bright white paper on both sides.
3. Printed on thinner creamy stock that typically has a thin border around the card. This latter format may be a pirate issue rather than a counterfeit. I have seen these in boxing and entertainment cards. I just bought two of them myself. They are not rescreened from existing cards but appear to be made from the original art.

There was also a wallpaper border made about 30 years ago using the artwork of many star cards from the postwar set [and no, I do not have it in my bedroom]. If this border was cut up it would look like a card.

If the card fronts have small numbers on them you may have a Canadian card rather than a fake or pirate issue. Some exhibits were contemporaneously printed and issued in Canada. They are on darker, lower grade stock. They are treated as genuine cards, though I am not certain they were made by the Exhibit Supply Company itself. Joe D. would be #28, Williams would be #30, Musial would be #57; there is no Canadian Mantle.