Melissa

Melissa

Solo Founder of Coin Error Expert
#100972905 followers5 following
#1,589Last month
22 KP
>10,000All time
22 KP

About

Founder of Coin Error Expert — a full-stack platform transforming how numismatists scan, analyze, and verify coin errors and banknotes.

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Maker History

  • Coin Error Expert
    Coin Error ExpertAI-powered scanner for U.S. coin errors & fancy serials
    Aug 2026
    • 🎉
    Joined Product HuntAugust 4th, 2026

Forums

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2mo ago

Seeking feedback & beta testers: AI-powered coin error identification PWA

Hey Product Hunt community!

I'm currently preparing for the official launch of Coin Error Expert, an AI-driven PWA built specifically for coin collectors and numismatists.

Unlike general coin valuation or appraisal apps, Coin Error Expert focuses on detecting, identifying, and textually describing specific coin errors such as doubled dies, off-center strikes, and planchet flaws. It also links directly into a full marketplace workflow with built-in shipping and payment integrations.

I'd love to get your thoughts:

Coin Error Expertp/coin-error-expert•

2mo ago

Seeking feedback & beta testers: AI-powered coin error identification PWA

Hey Product Hunt community!

I'm currently preparing for the official launch of Coin Error Expert, an AI-driven PWA built specifically for coin collectors and numismatists.

Unlike general coin valuation or appraisal apps, Coin Error Expert focuses on detecting, identifying, and textually describing specific coin errors such as doubled dies, off-center strikes, and planchet flaws. It also links directly into a full marketplace workflow with built-in shipping and payment integrations.

I'd love to get your thoughts:

•

2mo ago

Coin Error Expert - AI-powered scanner for U.S. coin errors & fancy serials

​AI scanner that proves its work: Cross-references Variety Vista, Wexler's, Error Ref, and Cherrypickers' Guide before issuing reports. ​• Streamlined Submissions: Generates pre-filled PCGS, PMG, & auction manifests, emails, Avery flips, & shipping labels. • Interactive Marketplace: Features a 2x–10x digital loupe & QR-coded PDFs linking to coin SKUs. • Pre-Screened Quality: Coins must meet minimum auction thresholds before generating submission PDFs to ensure high-value inventory.
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