Test 1ozt Silver Rounds in the pre-beta It’s not as accurate as testing versus known authentic Coins or Rounds but could be useful. Big thanks to Dr. David Rakestraw, the late Phil Paul, Ben Faber from Faber Acoustical, and A W Leissa for his extensive work and study on vibrating plates. Without their work, this Acoustic Model would not be available in the app. If you have a Pocket Pinger early access can be found in the bonus pack. Any questions please let me know. Thank you ### If you or someo