Cornerstone Mask Ogerpon ex
Terastal Fest ex · #91/187 · Double Rare · 2024JPN
All 85 Ogerpon cards ranked by value →Price history
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Graded values
Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.
PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.
Graded population census · updated 2026-09-20
Population data from PriceCharting, updated monthly.
Auction sale integrity
NewGraded sales for this card from public auctions, each checked for shill/relist patterns and prices that don’t match the market. How this works →
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Teal Mask Ogerpon exPrismatic Evolutions · 2025$15.44How much is Cornerstone Mask Ogerpon ex #91/187 worth?
Cornerstone Mask Ogerpon ex #91/187 is a Double Rare Japanese card from Terastal Fest ex (2024) — today it trades at roughly $0.30 ungraded.
Grading changes the math on this one: a PSA 10 is valued around $28.99, roughly 96.6x the raw price, while a PSA 9 sits near $10.81. 694 copies have been graded to date, and 82% of them came back a 10 — worth knowing before you pay grading fees.
These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.
