Understand the photo before you trust the estimate
Original, practical guidance for collectors using photo-based AI analysis—what the technology can assess, how to produce useful images, and when an in-hand professional opinion matters.
Collector guides
What Is AI Coin Grading?
Learn what photo analysis can assess, what it cannot authenticate, and how it differs from professional certification.
Practical photographyHow to Photograph a Coin for Grading
Use even light, sharp focus, controlled glare, and consistent obverse/reverse framing for a more useful estimate.
Built around visible limits
These guides are published by the CoinAiLyzer product team and reflect the methodology and limitations already documented across the app’s public materials. Numismatic methodology is led by Daniel Malone, Lead Numismatic Advisor, whose public profile documents more than 40 years in numismatics.
Guidance is dated and revised when product coverage or methodology changes. Market figures can move; photo-based results can change with image quality; and important buying, selling, authentication, or insurance decisions require independent research or qualified in-hand review.