1978 Topps · #550
John Mayberry
estimateguide value · no realized compsas of 2026-06-24
No realized sales recorded yet — the SportsCardsPro guide value below is the current market reference for this card.
Guide value · SportsCardsPro
price-guide reference, not realized sales- Raw$30
- PSA 9$20
- BGS 10$368
SCP sales volume 21 · as of 2026-06-24