SLABBYPREPIs it worth grading? · Measure a card →

ACE centering requirements

From an August 2026 cross-check of ACE’s published scale. Checked 2026-08-22. Official page.

Grade	Front	Back	As published
Gem Mint 10	60/40	60/40	Better than 60/40, front and back.
Mint 9	65/35	70/30
NM-MT 8	70/30	75/25
NM 7	75/25	80/20
EX-MT 6	80/20	80/20
EX 5	80/20	80/20
VG-EX 4	80/20	80/20
VG 3	85/15	85/15
Good 2	85/15	85/15
Poor 1	85/15	85/15

Notes

ACE measures by machine and reports all four border percentages; its 10 line is centering "less than a 60/40 split".
If the centering grade is two or more grades below the overall grade, an OC qualifier is appended.

ACE grading fees

Read from ACE’s pricing page (GBP), converted at 1 GBP = 1.337 USD on 2026-09-20. Checked 2026-09-20. Official page · full cost page.

Tier	Fee / card	Max value	Turnaround
Core (members) (not currently offered)	$16.04	no cap published	75 business days	AceSelect members only.
Value (members) (not currently offered)	$20.06	no cap published	60 business days	AceSelect members only.
Basic	$24.07	no cap published	30 business days
Standard	$33.42	no cap published	15 business days
Premier	$42.78	no cap published	10 business days
Ultra	$80.22	no cap published	5 business days
Luxury	$160.44	no cap published	2 business days

ACE is UK-based; shipping is not included and declared values above about $1,000 may add an insurance fee.

Questions

What centering does ACE require for its top grade?

Gem Mint 10: 60/40 on the front and 60/40 on the back.

How is centering measured?

Compare the two borders on each axis (left vs right, top vs bottom). A card whose left border is 55% of the left+right total is "55/45". Services use the worse axis.

Does ACE publish back centering figures?

Yes for some grades — see the table.

All services · 50/50 · 52/48 · 53/47 · 55/45 · 57/43 · 58/42