Thank you Steve B - You make very good points. You are right, it is not impossible to make good forgeries. The point I was making is I believe we can rule out the Festburg cards as forgeries, or re-prints from the original plates sometime in the 1970-1980s. Yes you are right a plate can be used over and over, most shops did save their offset plates, but to save one for over 29 years, would be hard. Remember we are talking about Printing from 1947, much different than what we have today. And I cannot say how the cards where actually printed 100%. But the odds are they where printed through offset printing. Thanks John PS. I refer you to KeyMan Collectibles about photo stats.
https://keymancollectibles.com/photo...insonphoto.htm