[Historic Error Find]

1990 Topps Hills Hit Men Canseco #7 / Dave Parker #21 Wrong-Back – First Known Example in the entire world After 35 years of silence in every database (TCDB, PSA pop, Beckett, eBay sold, error catalogs), I’m thrilled to share the first documented wrong-back error Jose Canseco from the 1990 Topps Hills Hit Men boxed set.

Card Details: Front: Jose Canseco #7 (Oakland A’s, .277 BA, 37 HR, .540 SLG – #1 slugging rank)

Back: Dave Parker #21 (Oakland A’s, .243 BA, 20 HR, .461 SLG – full bio, stats, photo)

Design: 100% authentic Hills Hit Men orange back, pink text, baseball graphic, ©1990 Topps

Print Flaw: Slight back misregistration (text off-center vs. front) – textbook press-sheet misalignment
Condition: Raw, corners nice, nice centering

Proof of Uniqueness:TCDB: 0 error/variation entries for entire 33-card set
PSA/BGS pop reports: 0 graded Hills Hit Men errors
eBay sold, Heritage, Goldin: No trace of this combo
Net54/Blowout/Reddit archives: Zero mentions since 1990

High-Res pictures (front, back, edges, close-ups) will post soon having sizing imaging problem they upload way to huge:
This is a true 1/1 discovery from a low-print-run regional promo (Hills Department Stores only). I will be Submitting to PSA under “Printing Error” Soon.

I will be Selling post-slab (Heritage/Goldin or other consignment likely

Thoughts? Seen anything like this? Let’s get the error community buzzing! Thanks,
CJ / Historic Error Find