Certificate of Authenticity
Card Name
CORNERSTONE MASK OGERPON EX
Production Number
00020428
Collection
TERASTAL FESTIVAL 2024
Card Reference
091/187
Edition / Rarity
DOUBLE RARE (JP)
Overall Grade
9
Legacy Grading System
Centering
10
Corners
9
Edges
9
Surfaces
9
This certificate confirms that this card was authenticated and graded by RKT Grading under our legacy grading system. Verify at rktgrading.com/population-report/legacy/00020428-cornerstone-mask-ogerpon-ex
Graded on 30 March 2026