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 #51Same card, set and grade across sources — different physical copies. Not the same slab. For one specific slab's history use cert provenance.
2 sales only2 sales (universal label, last 5 yrs, CGC)two sales $12.00 / $21.00 — not a market estimateJun 15, 2026 → Jul 6, 2026Fanatics Collect · CGC6 not counted
live nowAlt1999 Pokemon Base Set Koffing #51edition unstated (pooled with unlimited)BGS live — not a realized priceasking price $499.00
live nowAlt1999 Pokemon Base Set Koffing #51edition unstated (pooled with unlimited)PSA live — not a realized priceasking price $799.00
live nowAlt1999 Pokemon Base Set Koffing #51edition unstated (pooled with unlimited)BGS live — not a realized priceasking price $399.00
live noweBay1999 Pokemon Base Set #51 Koffing Unlimited CGC 8.5unlimitedCGC 8.5live — not a realized priceasking price $14.99
live noweBay1999 POKEMON BASE SET UNLIMITED Koffing #51 PSA 10unlimitedPSA 10live — not a realized priceasking price $299.99Jul 13, 2026Fanatics Collect1999 Pokemon Base Set Koffing #51 PSA 9 MINTedition unstated (pooled with unlimited)PSA 9grader filter: CGC only$15.00
Jul 6, 2026Fanatics Collect1999 Pokemon Base Set Koffing #51 CGC 10 GEM MINTedition unstated (pooled with unlimited)CGC 10$21.00
Jun 15, 2026Fanatics Collect1999 Pokemon Base Set Koffing #51 CGC 9 MINTedition unstated (pooled with unlimited)CGC 9$12.00