CrownCheck — AI-Powered Vintage Watch Evaluator
Scout eBay for vintage mechanical timepieces. CrownCheck's AI vision
evaluates authenticity, estimates repair costs, sources parts, and
tells you whether the asking price is above or below the brand's
historical average — so you never overpay for a project watch again.
What CrownCheck does
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Searches eBay listings for vintage mechanical watches by brand and
keyword
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AI vision analysis of listing photos for condition and authenticity
signals
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Repair cost estimates and parts-sourcing guidance for project
watches
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Price comparison against historical brand averages (Seiko, Omega,
Rolex, Citizen, Longines, Breitling, Tissot, and more)
- Below-average deal filter to surface the best buys instantly
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Save watches and set price-drop alerts (free account required)
Search modes
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For Parts / Project — non-working or incomplete
watches for restoration
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Working / Used — functioning used watches at fair
prices
Create a free account to start scouting, or
sign in if you already have one.