Track your coins.
Know their worth.
Real-Time Metal Valuations
Automatic gold, silver, and platinum pricing updated every 5 minutes from live market data. See the exact melt value of every coin in your collection.
Numista Catalog Integration
Search the world’s largest coin catalog directly from Coffer. Auto-fill coin details, fetch images, and track collector market values.
Portfolio Analytics
Aggregate portfolio value with historical charts, metal composition breakdowns, and multiple timeframes from 1 hour to full history.
Self-Hosted & Private
Deploy with Docker in minutes. Your data stays on your hardware. No subscriptions, no tracking, no third-party dependencies.
Collection Import
Import your existing Numista collection with a single OAuth flow. Coins, images, and metadata are pulled automatically. Note: large collections may generate a significant number of API calls.
Detailed Coin Records
Store weight, purity, diameter, grade, mint mark, year, denomination, country, and more. Supports bullion, commemorative, and circulation coins.
Screenshots
Section titled “Screenshots”
Browse your collection with filters and real-time valuations
Detailed coin view with specifications, images, and pricing
Coin type overview with variants and aggregate valuations
Portfolio analytics with historical value tracking
Search the Numista catalog directly from the add coin form
Physical specs and metadata fetched automatically by Numista ID
One-click Numista collection import via OAuth