10 Best Coin Scanner Apps for Free

CoinKnow is our top pick for the best coin scanner app, offering unmatched accuracy that serious collectors need. This ...
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Michigan man launches coin-grading device amid discontinuation of pennies

GRAND RAPIDS, MI - A Grand Rapids-based inventor has developed a first-of-its-kind device designed to transform how collectors grade and value their coins. The OCS200, created by Richard Colonna of ...
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Startup Spotlight: Quantitative Collectors Group

Richard Colonna of Quantitative Collectors Group (QCG) — has developed a first-of-its-kind device designed to transform how ...

10 Best Coin Identifier Apps Free

CoinKnow is our top pick for the best coin identifier app, offering unmatched accuracy that serious collectors need. This innovative coin identifier app is one of only two on the market that ...