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

Card Grading

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Contact Us

support@rktgrading.com
Available on request
Available on request

Registry of Excellence.

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RKT Grading

The Grading Process Pricing Population Report Blog FAQ Contact

RKT Grading

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

Card Grading

Card Grading UK
Pokémon Grading
Yu-Gi-Oh! Grading
MTG Grading
One Piece Grading
Lorcana Grading
Dragon Ball Grading

Contact Us

support@rktgrading.com
Available on request
Available on request

Registry of Excellence.

Certificate - HOUNDSTONE EX (00008820) | RKT Grading

Print Certificate

RKT GRADING

Certificate of Authenticity

Card Name

HOUNDSTONE EX

Production Number

00008820

Collection

OBSIDIAN FLAMES 2023

Card Reference

102/197

Edition / Rarity

DOUBLE RARE

Overall Grade

Legacy Grading System

Centering

Corners

Edges

Surfaces

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/00008820-houndstone-ex

Graded on 30 March 2026