Top 100 Errors / Variations and the state of collections these cards prior to 1985

[ALR-bishop]

I like your definitions Adam but disagree on DPs. For me two different cards of the same player with the same # are variations. And if they are two different cards of the same player in the same set it would seems to me you would need both for a master set. But the fact there are a whole bunch of DP card differences in most old Topps sets likely makes your definition more manageable and sensible

[steve B]

For stuff like the double prints I like the term Varieties.
It's used in one of my other hobbies to describe an item that's not a correction, but typically a constant error that's a difference in the plate at a particular spot.

There are then specific terms for exactly what the heck went wrong.... Double transfer, Foreign entry, plate scratch, Rust hole, erasure, plate crack, (and that's just for the engraved ones.. typographed and lithographed have their own list of problems.

Collectability depends on how rare or spectacular that variety is, rare AND showy = expensive.