Silver 1 oz Lunar Series II specifications and ping frequencies
The Silver 1 oz Lunar Series II is a silver coin from Australia (2017–2017), weighing 31.1 g with a diameter of 45.6 mm. Tapped gently on its edge, a genuine one rings at about 2.4 kHz, 5.7 kHz and 10.2 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 | 2407 Hz · 5745 Hz · 10239 Hz |
|---|---|
| Metal | Silver |
| Composition | 99.9% silver, 0.1% copper |
| Weight | 31.1 g |
| Fine metal content | 31.069 g |
| Diameter | 45.6 mm |
| Thickness | 2.6 mm |
| Face value | $1 AUD |
| Country | Australia |
| Years | 2017 - 2017 |
Compare with the ping frequencies of every supported coin.
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