I'm a collector. I have a '51 Bowman Mantle and would like to know what to
look for to see if it's counterfeit. (I've read some internet warnings on
1951 Mantles.)

I'd rather not mail the card to a grading service, if possible.

Is there anything I might look for on this card which would be a tip-off?
The card does look like my other '51 Bowmans, front and back.

Thanks for any advice!

Alan