The most common method of resealing back in the day was ironing the pack back together. Of course that's pretty easy to detect, the packs originally had just the two big flaps sealed to each other and the iron usually stuck all the flaps together.
Fakers have become a lot more sophisticated, but if the flaps seem original that's a first good sign.
I don't know if searching packs for 10s would be worthwhile. All the 70's stuff had pretty bad centering most of the time. But----If that's what you're after, sloppily resealed packs that were probably done before grading might be an ok risk if they're cheap enough. Back then it was usually done looking for stars/rookies and there wouldn't be much attention paid to commons or minor stars that would grade well. Open, pull stars, add cards from another box, iron back down, sell as packs at the flea market. (I never did, but there were flea market guys who did for sure and even a few brick and mortar shops. )So likely no Brett, Yount, Rice, Lynn, maybe Carter, and also no Ryan, Jackson etc. But the stuff that would be low population commons will all be there. And from the sound of it the rest of the lot will be a good indicator of the likely centering.
Steve B
|