What the data says about coins
Original research and data-driven articles from the CoinAiLyzer team—large-scale studies of certified coin populations and practical takeaways for collectors and dealers.
Articles
Buy the Coin, Not the Holder
What 65,000 certified Morgan dollars actually show about PCGS, NGC, and the quality range hiding inside a single grade.
Research paper · PreprintMorgan Dollar Grading Study
The full 29-page preprint: methodology, statistics, and supporting analyses behind the Morgan dollar population comparison.
How this research is produced
Research published here uses the computer-vision grading system underlying CoinAiLyzer as a common measurement instrument across large coin-image populations. Findings describe what the instrument observes; they are not claims that any grading service assigned an incorrect grade on any individual coin.
Articles are dated and revised when methodology or findings change. For practical collector guidance, visit the Learning center.