SLABBYPREPIs it worth grading? · Measure a card →

TAG 10: centering requirements

From an August 2026 cross-check of TAG’s published rubric. Back figures shown are TAG’s TCG figures; sports backs differ. Checked 2026-08-22. Official page.

Gem Mint 10: ~55/45 front, 65/35 back (their word: "approximately")
Pristine 10: ~51/49 front, 52/48 back (their word: "approximately")
Measure your card against this line →

Either side of it

Ratios that reach Gem Mint 10 but not the grade above, on the front line alone: 50/50 · 52/48 · 53/47 · 55/45.

TAG, every grade

GradeFrontBack
Pristine 10~51/4952/48
Gem Mint 10~55/4565/35
Mint 9~60/4075/25
8.5~62.5/37.585/15
NM-MT 8~65/3595/5
7.5~67.5/32.5
NM 7~70/30
6.5~72.5/27.5
EX-MT 6~75/25
5.5~77.5/22.5
EX 5~80/20
4.5~82.5/17.5
VG-EX 4~85/15
3.5~87.5/12.5
VG 3~90/10
2.5~92.5/7.5
Good 2~95/5
Fair 1.5~98.3/1.7
Poor 1

Questions

What centering does TAG require for a 10?

Gem Mint 10: ~55/45 front, 65/35 back. TAG says "approximately", so the line carries grader discretion.

What is the difference between Gem Mint 10 and Pristine 10 at TAG?

Pristine 10 needs ~51/49 front, 52/48 back; Gem Mint 10 needs ~55/45 front, 65/35 back.

Which centering ratios reach exactly a TAG 10?

On the published front lines alone: 50/50, 52/48, 53/47, 55/45 — better than the Gem Mint 10 line but not the next line. Corners, edges and surface can only hold or lower the grade.

How is the ratio measured?

Compare the two borders on each axis: a card whose left border is 57% of left plus right is 57/43. Services judge the worse axis, front and back separately. SlabbyPrep measures both from a photo to a hundredth of a millimetre.

All six services by grade · TAG standards and fees · is it worth grading?