I think my other post was too ad-like sorry Leon. Short update I have the app (iPhone) running grading, authentication and provenance (tampering) pretty flawlessly for 2 vintage and 2 modern sets w sub-grades. I'm excited to share the POC w you all when it launches - my plan is to give the app a free beta here fwiw. If this is a violation please feel free to remove! Thx
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