Pingcoin - Apps on Google Play

Digital Ping Test for Gold & Silver Coins
Digital Ping Test for Gold & Silver Coins

Aquaculture Investor Index

Bullion Test - Apps on Google Play

Android Apps by TTcoin Games And Application on Google Play

Worried You Have Fake Silver? Here's How YOU can Check it for Free

So i guess they have ping test apps now. This one is Pingcoin

The Pocket Pinger + Stack Stick, Coin Ping Test (Black

Precious Coin Tester on the App Store

Is it even worth testing these or do I return them immediately

Precious Coin Tester on the App Store

Metal Detector - Apps on Google Play

Android Apps by TTcoin Games And Application on Google Play

Precious Coin Tester 1.4.4 Free Download

Precious Coin Tester - Apps on Google Play