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Silver coin guide
Silver Lunar Series II 1 oz — ping test & specs
The Perth Mint's Lunar Series II is a 1 oz .999 silver coin struck in an unusually wide, thin 45.6 mm format (Series I and III are 40.6 mm), which lowers its ring frequencies.
Opens the free tester with this coin preselected — audio never leaves your device.
Official specifications
| Weight | 31.103 g |
| Diameter | 45.6 mm |
| Composition | .999 fine silver |
Source: Perth Mint. Coin Pinger checks measured weight and diameter against these values.
Expected resonance range
High confidence*| Mode | Expected ring | Recommended variance |
|---|---|---|
| c0d2 | 2.16–2.56 kHz | ±8.5% |
| c0d3 | 5.04–5.91 kHz | ±7.9% |
| c0d4 | 8.85–10.37 kHz | ±7.9% |
A genuine Silver Lunar Series II 1 oz rings within these ranges at its c0d2/c0d3/c0d4 vibration modes, fixed by its size and metal. The recommended variance is how far a genuine specimen's ring can sit from each center — built up in quadrature from real manufacturing tolerance and temperature (under 1%), phone-mic capture reproducibility (≈4%), an extra allowance on the fundamental for minting-asymmetry splitting, and a per-metal model-uncertainty term (largest for .9999 gold, whose modulus is least certain). This coin's band is widened further because the issue is struck at slightly varying thickness across years. The higher modes also carry a small thick-plate centre correction, since a real coin is not infinitely thin. The high-confidence tag reflects how well-established this metal's constants are: Computed from well-established silver elastic constants and cross-checked against same-size sibling coins. These are guidance bands, not exact values — see the methodology for the exact formula, or calibrate your own coin in the app for a specimen-exact reference and tighten each peak per coin.
* These are computed guidance ranges. Certain your Silver Lunar Series II 1 oz is genuine but it won't match? Send us its ring — we'll dig in and improve the reference.
🎙 Submit sample pingsHow to ping test a Silver Lunar Series II 1 oz
- Hold — grip the coin by its center (a nodal point) in a coin ping-test holder so the rim rings freely; a fingertip at the center is a last resort.
- Tap — strike the edge with a striker near the microphone.
- Read the verdict — MATCH or NO MATCH against the peaks above, plus weight and size checks.
Silver Lunar Series II 1 oz — frequently asked
How much does a Silver Lunar Series II 1 oz weigh?
The official specification is 31.103 g in .999 fine silver (source: Perth Mint). Coin Pinger's weight check allows ±0.3 g by default.
What size is a Silver Lunar Series II 1 oz?
45.6 mm in diameter, per Perth Mint. Note the average disc thickness is less than the rim caliper reading — the raised rim and relief concentrate metal at the edge.
What frequency does a genuine Silver Lunar Series II 1 oz ring at?
Its fundamental (c0d2) vibration mode is computed to ring in the 2.16–2.56 kHz range, with higher modes near 5.04–5.91 kHz and 8.85–10.37 kHz. These are first-principles physics computations from the coin's published mass, diameter, and metal — not measurements of sample coins.
Why does my genuine Silver Lunar Series II 1 oz ring slightly off the listed frequencies?
The Silver Lunar Series II 1 oz is struck at slightly varying thickness across years, and frequency scales directly with thickness — so genuine specimens from different years ring at measurably different pitches. Phone-mic capture adds a few percent more tap-to-tap spread. That's why this reference band is wider than average.
Does ping testing damage a Silver Lunar Series II 1 oz?
No — the test needs only a light tap on the edge with a non-marring striker (a wooden pencil or plastic stylus works well), far gentler than normal handling. Hold the coin at its center so the rim can ring freely.