1 Crown sterling (Victoria – Edward VII) specifications and ping frequencies
The 1 Crown sterling (Victoria – Edward VII) is a silver coin from the United Kingdom (1839–1902), weighing 28.28 g with a diameter of 38.61 mm. Tapped gently on its edge, a genuine one is expected to ring at about 4.2 kHz, 9.7 kHz and 16.7 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 | 4245 Hz · 9702 Hz · 16700 Hz |
|---|---|
| Metal | Silver |
| Composition | 92.5% silver, 7.5% copper |
| Weight | 28.28 g |
| Fine metal content | 26.159 g |
| Diameter | 38.61 mm |
| Thickness | 2.6 mm |
| Face value | 1 Crown |
| Country | United Kingdom |
| Years | 1839 - 1902 |
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 Crown sterling on the Go
Download Pingcoin for iPhone or Android to instantly verify your 1 Crown sterling and other precious metal coins using acoustic authentication.