Seller just started listing autographed material. Says he has 100,000 pieces to sell from 10 foot lockers. No time though to have certified. Ruths, Gehrigs, Mantles, etc.; you know, the usual multi thousand dollar material that nobody has "time" to certify (lol).
One of the first items he gets feedback on, a Ruth ball, that looks like a Coach's Corner construct, is negative. JSA fails it. 21 feedbacks for trinkets, already a neg for a forgery.
I have only basic Mantle signature acumen, thus my thread in the authenticity opinion section:
https://www.ebay.com/itm/1960-TOPPS-BASEBALL-160-RIVAL-ALL-STARS-MA...