Advice on spotting a stamped signature on a vintage card
 

How do you spot a stamped signature on a vintage card?

Use a jewelers loop and if the signature under the loop appears to be broken up with numerous spaces in the ink then it is stamped.

Thanks, Richard. That is what I thought. I just didn't know how to word it

Does it matter what quality of loupe that you use? Or size of magnification? I've noticed some are very cheap. Thanks.

The loupe I use is 10X.

Thanks Richard