Real Gold - Fake Sovereign - purity limitation of the ping test combined with accurate measurements still to be determined Always use multiple testing methods Weight Dimensions Magnet Ping Minimum. Thanks @noumaankadla for sharing ### If you or someone you know would like to test metals with a Pocket Pinger, they’re available at CoinPingTest.com, Amazon, and eBay. Disclaimer: All the risks associated with pinching a coin in between your fingers and then tapping it with plastic and/or wood are pr

Roman Gold Mining Technique | What On Earth?