Upload a photo of any coin or bill. ErrorHunter's AI instantly scans for doubled dies, off-center strikes, die cracks, and 67+ known minting errors — then tells you what it's worth.
Scan Your Coin NowErrorHunter makes coin and currency error detection fast, accurate, and accessible to everyone — from first-time collectors to professional dealers.
Take a clear photo of your coin or paper currency. Use your phone camera or upload an existing image. Both sides help, but even one side works.
Our triple-engine AI system examines your image simultaneously. A local machine learning model, a visual recognition API, and GPT-4 Vision work in parallel to identify errors.
Within seconds you receive a detailed report: error type, confidence score, rarity level, and estimated market value. If an unknown error is detected, our anomaly system flags it for review.
ErrorHunter detects minting and printing errors on coins and currency from the United States and 170+ countries. Our AI covers the full spectrum of collectible errors.
Detect doubled lettering, dates, and design elements caused by misaligned hub impressions.
Identify coins struck off-center, from minor shifts to dramatic 50%+ displacements with visible blank planchet.
Find raised lines and rim breaks caused by cracked or broken dies during production.
Spot curved, straight, and ragged clips where coin blanks were improperly cut from metal strips.
Catch coins struck on blanks intended for different denominations — among the rarest mint errors.
Scan banknotes for misaligned printing, ink smears, missing serial numbers, and cutting errors.
Three AI systems run simultaneously on every scan. A trained machine learning model handles pattern recognition, Ximilar's collectible API provides coin identification, and GPT-4 Vision delivers deep error analysis. The combined result is far more accurate than any single system.
No waiting days for expert opinions. Upload a photo and receive error identification, confidence scores, rarity levels, and estimated market values in seconds. Our system covers 67+ error types and cross-references current market data.
ErrorHunter is not limited to US coins. Our dataset spans 170+ countries with specialized models for US, Canadian, UK, Japanese, and European currencies. Whether you collect Morgan dollars or Japanese Yen, ErrorHunter can scan it.
Most tools only check for known error types. ErrorHunter includes an anomaly detection system that uses Shannon entropy analysis to flag potentially unknown or novel errors that have never been cataloged — giving you an edge other collectors lack.
Start with 3 free scans. When you're ready, choose the plan that fits your collecting style. Every paid plan gives you full AI detection power.
$0.99/day
10 scans per day. Perfect for quick checks on a few coins you found in pocket change.
$6.99/month
75 scans per day. For active collectors who regularly search rolls, bags, and collections.
$49.99/year
Unlimited scans. Full AI power, live scan mode, priority processing, and market trend pricing.
Thousands of valuable error coins are hiding in pocket change, rolls, and collections right now. ErrorHunter gives you the AI-powered edge to spot them.
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