The UK's professional trading card grading service. Consistent AI-powered grades, NFC tap-to-verify slabs, and a population registry you can trust.

Graded in the UK.

The UK's professional trading card grading service. Consistent AI-powered grades, NFC tap-to-verify slabs, and a population registry you can trust.

Graded in the UK.

Certificate - CORNERSTONE MASK OGERPON EX (00025904) | RKT Grading

RKT GRADING

Certificate of Authenticity

CORNERSTONE MASK OGERPON EX

TERASTAL FESTIVAL 2024

00025904SPECIAL ILLUSTRATION RARE (JP)POKEMON

Overall Grade

RKT 10

Legacy Grade

Centering

Corners

Edges

Surfaces

Authenticated & graded by RKT Grading
under its legacy grading system.

Graded 2 June 2026

rktgrading.com/population-report/legacy/00025904-cornerstone-mask-ogerpon-ex