Silver 1 Dollar "Seated Liberty" (with motto) specifications and ping frequencies
The Silver 1 Dollar "Seated Liberty" (with motto) is a silver coin from the United States (1866), weighing 26.73 g with a diameter of 38.1 mm. Tapped gently on its edge, a genuine one is expected to ring at about 4.3 kHz, 9.8 kHz and 16.8 kHz: its first resonance frequencies, set by its metal, size and thickness. A counterfeit made of a different metal, or with a different weight or thickness, rings at different frequencies, which is what the ping test above checks.
| Ping test reference frequencies | 4275 Hz · 9775 Hz · 16837 Hz |
|---|---|
| Metal | Silver |
| Composition | 90% Ag, 10% Cu |
| Weight | 26.73 g |
| Fine metal content | 24.057 g |
| Diameter | 38.1 mm |
| Thickness | 2.8 mm |
| Country | United States |
| Years | 1866 |
These reference frequencies are predicted by our resonance model from the coin’s weight, size and metal, and not yet confirmed with recordings. Compare with the ping frequencies of every supported coin.
Authenticate Your 1 Dollar "Seated Liberty" on the Go
Download Pingcoin for iPhone or Android to instantly verify your 1 Dollar "Seated Liberty" and other precious metal coins using acoustic authentication.