Title comps
Realized prices for the same title, issue and grade across houses — different physical copies. For one specific slab, use cert provenance.
Same book, same gradecard base koffing pokemon set #51 · grade 9Same card, set and grade across sources — different physical copies. Not the same slab. For one specific slab's history use cert provenance.
single sale1 sale (universal label, last 5 yrs, PSA)last sale $15.00 — not a market estimateJul 13, 2026 → Jul 13, 2026Fanatics Collect · PSA1 not counted
Jul 13, 2026Fanatics Collect1999 Pokemon Base Set Koffing #51 PSA 9 MINTedition unstated (pooled with unlimited)PSA 9$15.00
Jun 15, 2026Fanatics Collect1999 Pokemon Base Set Koffing #51 CGC 9 MINTedition unstated (pooled with unlimited)CGC 9grader filter: PSA only$12.00