It's a tough with this card. There are a lot of them, and a lot of decent fakes. I bought my first 52 Mantle in 1967 from the Card Collectors Company in NY, well before grading appeared on the scene. I got the second one, the variation, a few years back from Levi. I paid a lot more for that one
, a PSA 8OC, but was pretty sure it was a good one given the seller