Posted By:
Brad Green
If you see dotted lines or dashed lines at the top/bottom of the card, then it's a mini. If you don't see the dotted or dashed lines, then it may be cut from a 4/1. I see that several of your cards have dotted/dashed lines. I can't tell about the ones with baseball players...
There is more information on this. If you search net54 for W517, mini and Gehrig, you'll find some information.