1999 Base Set #51/102 Koffing (CGC 9 MINT)

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Asking price$17.67USDCListed price updated 56 min ago

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Valuation

Fair market valueEstimateGraded.Markets FMV · as of Aug 22 · how we price

$18.37

Platform estimateCourtyard Est. Value · not our FMV

$18.60

Insured valuenot reported by platform

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Details

Type: Graded card
Grading company: CGC
Grade: 9 MINT
Cert number: 6009705015
Set: Base Set
Card number: 51/102
Year: 1999
Language: English
Franchise: Pokémon

Price history — asks observed by Graded.Markets

Aug 22, 2026, 2:49 PM−2.5%$17.67
Aug 21, 2026, 5:09 PM+0.6%$18.13
Aug 21, 2026, 1:10 PM−2.5%$18.03
Aug 20, 2026, 1:20 PM$18.50

First seen Aug 20, 2026, 1:20 PM · last synced 56 min ago · listed Aug 22, 2026, 2:17 PM. Data aggregated from Courtyard; FMV figures combine licensed market data calibrated against observed sales, provided as-is.