Numii - Coin Photo Identifier

Numii — Your professional coin identification, valuation and collection manager.

Whether you’re cataloguing a lifetime collection or discovering an unexpected find, Numii turns two photos into a complete coin profile — fast, reliable, and built for collectors of all levels.

Instant AI Identification

• Snap obverse and reverse photos (or upload images) — our AI finds matching coin types in seconds.
• Recognizes modern, historical and foreign issues as well as many varieties and mint marks.
• Visual search tuned for real-world photos: rotations, partial wear and common lighting conditions.

Deep Coin Data

• Full metadata: country, year, denomination, mint mark, designer, composition, diameter and weight (when available).
• Rarity & mintage guidance and contextual historical notes to help you learn the story behind each coin.
• Multiple catalog references per coin for cross-checking and research.

Market Pricing & Valuation

• See up-to-date reference prices and suggested market ranges to quickly assess value.
• Price trends and market notes help you track how values change over time.

Professional-Grade Tools

• Grading guidance and error-coin detection to flag potential varieties and misprints.
• Exportable reports for coins you want professionally appraised or to share with dealers.

Smart Collection Management

• Create unlimited collections to organize by set, country, year, condition or personal tags.
• Track totals and estimated collection value at a glance.
• Add notes, purchase details, photos and provenance for every item.

How Numii Helps You

• Learn: built-in coin guides and fun facts make it easy to deepen numismatic knowledge.
• Organize: move from shoebox to searchable, secure digital catalog.
• Trade: prepare well-documented entries to show other collectors or offer for sale.

Secure & Simple

• Easy-to-use camera workflow for quick results.
• Optional cloud backup to keep your catalog safe and available on your devices.
• We respect your privacy — data handling follows our privacy policy below.

Subscriptions & Trial

Numii is free to download and includes identification and basic collection features. Premium unlocks unlimited identifications, advanced grading reports, full-market price history, cloud backup and pro features.