Coin Error Expert

Coin Error Expert provides a specialized platform for numismatists to accurately identify and manage U.S. coin errors and varieties. Key features include: • Cross-referenced error identification using Variety Vista, Wexler's, Error Ref, and Cherrypickers' Guide • Streamlined submission generation for PCGS, PMG, and auction houses, including manifests, emails, flips, and labels • Interactive marketplace with a 2x–10x digital loupe and QR-coded PDFs linking to coin SKUs • Pre-screening to ensure coins meet minimum auction thresholds before generating submission PDFs, verifying high-value inventory This platform allows collectors to photograph a coin and receive expert-level error classifications in seconds, distinguishing true mint errors from machine doubling. It supports cataloging identified coins with full numismatic fields such as denomination, mint mark, die variety, and estimated grade, creating a searchable and export-ready personal vault. Beyond identification and cataloging, Coin Error Expert facilitates buying and selling error coins directly within its marketplace, where listings include verified error types and grade assessments. For those looking to consign, the tool generates professional consignment packets for major auction houses like Heritage Auctions, Stack's Bowers, or GreatCollections, complete with detailed error classification and condition notes. This ensures that only high-value coins, meeting specific auction house minimums, are prepared for submission. Built for serious coin collectors and numismatists, this tool streamlines the entire process of identifying, cataloging, buying, selling, and consigning error coins.