Posted By:
AnthonyI don't know if it's still in effect, but either Mike or Steve at Global told me they had an exclusive agreement with Mastro to slab their packs. That would explain why they were not graded by PSA. However, as Steve Hart was the buying agent and he's the authenticator for PSA (and the best in the hobby at unopened material, IMO) I have no doubts they would've passed either company's standards.
edited to avoid the wrath of Sloate on a grammatical error!