How to test a precious coin with Precious Coin Tester

Share your videos with friends, family and the world

Precious Metal Gold Purity Analyzer AU-900K RS-232 Interface Gold

11 Most Valuable Coins: Rare Coins Wanted By Collectors

Common mistakes & Best practices for Precious Coin Tester

Precious Coin Tester: challenge in a noisy flea market (2019

Tips for Finding More Old Coins Metal Detecting - HobbyLark

Precious Coin Tester: a false positive? - Conclusion

The Pocket Pinger: companion tool for Precious Coin Tester

How to Calibrate the AGT1 Plus Gold Tester - New Model

1835 one quarter Anna sugar test original