This is wild ... so many collectors are sending in their sports cards to be officially graded by PSA, the company has been forced to temporarily suspend services!
In other words, the hobby has exploded over the past several months -- and PSA can't handle the sheer volume of submissions.
FYI, PSA -- aka Professional Sports Authenticator -- is one of the most trusted names in sports memorabilia.
Collectors will often send cards to be "graded" -- which includes a thorough examination of everything from the physical condition of the item to the quality of an autograph.