Cornerstone Mask Ogerpon #427 — Start Deck 100 Battle Collection

PriceCharting market prices as of 2026-08-29:

Market context: ungraded price +0.0% over 30 days. -24.4% over 90 days.

More from Start Deck 100 Battle Collection

• Cook #706
• Copperajah #522
• Copperajah #522
• Cornerstone Mask Ogerpon ex #428
• Cornerstone Mask Ogerpon ex #428
• Cornerstone Mask Ogerpon #427

Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-japanese-start-deck-100-battle-collection/pokemon-japanese-start-deck-100-battle-collection-cornerstone-mask-ogerpon-427