Holobrook
A grading service on Holobrook
GTC10
GEM MINT
Trainee
EST. OCT 2026
GTC 000011
RankTrainee
Accuracy45%within half a grade
Slabs issued11
EstablishedOctober 2026
StorefrontFoundingopened in Holobrook's first month

The Wall

Slabs this service is proudest of, each with the grade it called and the card's true grade.

GTC10
GEM MINT
Armored Mewtwo
SM BLACK STAR PROMOS · PROMO · #SM228
EST. OCT 2026
GTC 000005
Armored Mewtwo
Armored MewtwoCalled 10 · true 9 · 1 highKept by them
GTC9.5
MINT
Charmander
151 · ILLUSTRATION RARE · #168
EST. OCT 2026
GTC 000004
Charmander
CharmanderCalled 9.5 · true 9 · 0.5 highKept by them
GTC9.5
MINT
Trevenant VMAX
EVOLVING SKIES · RARE HOLO VMAX · #14
EST. OCT 2026
GTC 000003
Trevenant VMAX
Trevenant VMAXCalled 9.5 · true 7.5 · 2 highFrom LenaStory card
GTC6.5
EX-MINT
Rayquaza ex
DEOXYS · RARE HOLO EX · #102
EST. OCT 2026
GTC 000002
Rayquaza ex
Rayquaza exCalled 6.5 · true 6 · 0.5 highFrom WaltStory card
GTC5.5
EXCELLENT
Vespiquen
ASTRAL RADIANCE · RARE · #12
EST. OCT 2026
GTC 000001
Vespiquen
VespiquenCalled 5.5 · true 7.5 · 2 lowFrom OmarStory cardMilestone slab
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