CoinPing –

The Pocket Pinger w/ Stack Stick - Coin Ping Test

Ping Sound test on DUG silver coins?

Testing two suspect silver coins (aka How to tie a string around a coin!)

Still the best app. Always use multiple testing methods. # # # If you or someone you know would like to test metals with a Pocket Pinger, they're, By Sound Money Metals

Finger Pinger Pro Red Coin Ping Tester With Steel Test Coin - No Limits Energy - NoLE

Testing, Testing, 1-2-3 : Numismatic Testing Methods

Beginner Tip: Just because a coin has a ping does not mean it passes the ping test. Always compare the sound (and other specs) with a known authentic

New Product on the Market: The Pocket Pinger Coin Tester - Updated - General Precious Metals - The Silver Forum

Silver, Gold American Coin Gauge Counterfeit and Fake Detection Tool

Gold Bullion Coin Tester Scanner - Credit Card Size - Fits in Your Wallet