200 Dram (Noah's Ark) specifications and ping frequencies
The 200 Dram (Noah's Ark) is a silver coin from Armenia (2011–2026), weighing 15.55 g with a diameter of 27.66 mm. Tapped gently on its edge, a genuine one rings at about 8.6 kHz, 19.2 kHz and 32.3 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 | 8565 Hz · 19188 Hz · 32288 Hz |
|---|---|
| Metal | Silver |
| Composition | 99.9% silver, 0.1% copper |
| Weight | 15.55 g |
| Fine metal content | 15.534 g |
| Diameter | 27.66 mm |
| Thickness | 3 mm |
| Face value | 200 Dram |
| Country | Armenia |
| Years | 2011 - 2026 |
Compare with the ping frequencies of every supported coin.
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