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: $58.80, PSA 9: $15.60, PSA 8: $8.50, Raw: $3.68. The most recent PSA 10 sale was $58.80 on July 16, 2026, with 28 sales tracked in the last 30 days. The most recent PSA 9 sale was $15.60 on August 13, 2026. A raw (ungraded) copy last sold for $3.68 on August 23, 2026. CardIndex has tracked 299 total sales across all grades for this card. There are currently 229 active listings for Cornerstone Mask Ogerpon ex.
