TroCuri
How we grade every coin before it is listed.
Coins are read on the 70-point Sheldon scale, working from NGC's published standards, then a person signs off.
Every coin is graded by TroCuri — our own AI — on the 70-point Sheldon scale, working from NGC's published grading standards. It reads luster, strike sharpness, wear, and surface condition, flags any cleaning or damage, then a real person signs off.
The Sheldon scale, read from the photos.
TroCuri studies both sides for original surfaces and luster, wear on the highest design points, contact marks, and strike quality. Coins with cleaning or damage are given a Details designation rather than a straight numeric grade.
The signals on both sides.
- Luster and original surfaces
- Wear on the highest design points
- Contact marks and surface marks
- Strike quality and detail
- Signs of cleaning or damage
Sheldon 1 – 70.
Uncirculated. No wear, graded on marks, strike, and luster.
About Uncirculated. Only slight wear on the highest points.
Extremely Fine. Light wear with most detail crisp.
Very Fine. Moderate, even wear over the design.
Fine to Very Good. Heavier wear with major detail visible.
Good to About Good. Heavily worn, outlines and rims softened.
Nothing hidden.
- A grade on the 1–70 scale with a short condition note
- Photos of both sides of the coin
- Explicit flagging of any damage or cleaning
Reviewed by a person before it goes live.
TroCuri does the heavy lifting of reading surfaces, wear, and marks. A human makes the final call — AI proposes, humans approve.
Our grades are careful in-house estimates. They are not a replacement for professional third-party grading such as CGC, PSA, or PCGS. Professional certifications are noted when applicable.
Explore the rest.
ComicsCGC-style 0.5–10 condition research and issue details.
Trading CardsPSA-style 1–10 centering, corners, edges, and surface.
ApparelResale condition labels, measurements, and flaws.
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All standardsBack to the grading overview.