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PSA 10: Median of 3 sales, last 45 days · newest Oct 20, 2026 · checked Oct 26, 2026
PSA 9: Median of 3 PSA 9 sales in the last 90 days, latest 2026-09-28. Grade 9 guide (all graders): $29.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Cornerstone Mask Ogerpon ex (Twilight Masquerade #215) at $11.29 market price (TCGplayer market). Its Delta multiple is 8.68x.
A PSA 10 Cornerstone Mask Ogerpon ex (Twilight Masquerade #215) is currently shown at $98.00, the median of 3 PSA 10 sales in the last 45 days (newest Oct 20, 2026).
GemDelta records a 50.3% gem rate for Cornerstone Mask Ogerpon ex (Twilight Masquerade #215), with 518 PSA 10 copies out of 1,030 total PSA grades and a 8.68x Delta. That describes the grading profile; it is not financial advice.
Showing the latest 12 of 16 stored PSA 10 comps.