Cornerstone Mask Ogerpon ex from the Twilight Masquerade set (#199) is a Pokemon trading card released in 2024. It has a rarity of Ultra Rare. Current fair market values for Cornerstone Mask Ogerpon ex are PSA 10: $35.60, PSA 9: $14.42, PSA 8: $8.65, Raw: $4.10. The most recent PSA 10 sale was $31.99 on February 23, 2026, with 26 sales tracked in the last 30 days. The most recent PSA 9 sale was $14.99 on April 5, 2026. A raw (ungraded) copy last sold for $4.99 on June 24, 2026. CardIndex has tracked 172 total sales across all grades for this card. There are currently 256 active listings for Cornerstone Mask Ogerpon ex.
