Coin Pinger
Acoustic bullion authentication — free, private, on-device
Coin comparison
Silver Lunar Series II 1 oz vs Silver Lunar Series III 1 oz
Distinct rings: how these two silver coins differ on the scale, under the calipers, and — computed from first-principles physics — in the ring.
Official specifications, side by side
| Silver Lunar Series II 1 oz | Silver Lunar Series III 1 oz | |
|---|---|---|
| Weight | 31.103 g | 31.107 g |
| Diameter | 45.6 mm | 40.9 mm |
| Composition | .999 fine silver | .9999 fine silver |
| Mint | Perth Mint | Perth Mint |
Expected ring, mode by mode
| Mode | Silver Lunar Series II 1 oz | Silver Lunar Series III 1 oz |
|---|---|---|
| c0d2 | 2.16–2.56 kHz | 3.34–3.96 kHz |
| c0d3 | 5.04–5.91 kHz | 7.76–9.09 kHz |
| c0d4 | 8.85–10.37 kHz | 13.54–15.87 kHz |
Their fundamental bands do not overlap: a genuine Silver Lunar Series II 1 oz rings 2.16–2.56 kHz while a genuine Silver Lunar Series III 1 oz rings 3.34–3.96 kHz. The ping alone separates these two coins — before you even reach for a scale. Frequencies are computed from each coin's published mass, diameter, and metal via free circular-plate physics — see the methodology.
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