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Germania 1 oz — ping test & specs

The Germania is a hugely traded private-mint 1 oz .9999 coin at 38.61 mm. As a private issue its spec is the mint's product sheet rather than a sovereign standard — the physics doesn't care.

Opens the free tester with this coin preselected — audio never leaves your device.

Official specifications

Weight31.1 g
Diameter38.61 mm
Composition.9999 fine silver

Source: Germania Mint (private). Coin Pinger checks measured weight and diameter against these values.

Expected resonance range

High confidence*
ModeExpected ringRecommended variance
c0d24.30–4.89 kHz±6.5%
c0d39.97–11.17 kHz±5.7%
c0d417.31–19.41 kHz±5.7%

A genuine Germania 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). 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 Germania 1 oz is genuine but it won't match? Send us its ring — we'll dig in and improve the reference.

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How to ping test a Germania 1 oz

  1. 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.
  2. Tap — strike the edge with a striker near the microphone.
  3. Read the verdict — MATCH or NO MATCH against the peaks above, plus weight and size checks.

Germania 1 oz — frequently asked

How much does a Germania 1 oz weigh?

The official specification is 31.1 g in .9999 fine silver (source: Germania Mint (private)). Coin Pinger's weight check allows ±0.3 g by default.

What size is a Germania 1 oz?

38.61 mm in diameter, per Germania Mint (private). 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 Germania 1 oz ring at?

Its fundamental (c0d2) vibration mode is computed to ring in the 4.30–4.89 kHz range, with higher modes near 9.97–11.17 kHz and 17.31–19.41 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 Germania 1 oz ring slightly off the listed frequencies?

Phone-mic capture moves a genuine peak a few percent tap-to-tap — strike point, holding pressure, and the microphone's own response all matter. Temperature and normal minting tolerance add under 1%. The published band already allows for all of this; for a tighter reference, calibrate your own genuine Germania 1 oz in the app.

Does ping testing damage a Germania 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.

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The physics of the Germania 1 oz ping

Those 3 peaks aren't random. When you strike the coin it flexes as a free disc in fixed patterns called vibration modes — 0 nodal circles with 2, 3 and 4 nodal diameters, written c0d2 / c0d3 / c0d4. Each pattern rings at one frequency.

Where those frequencies land is set by the coin's geometry and metal. For a thin disc, frequency ∝ (thickness ÷ diameter²) × √(stiffness ÷ density). This Germania 1 oz spreads 31.1 g of .9999 fine silver across 38.61 mm — an effective disc thickness of about 2.5 mm once the raised rim and relief are averaged out — which puts its fundamental (c0d2) near 4595 Hz.

An ideal thin disc's modes sit at fixed, geometry-only ratios: 1 : 2.33 : 4.11. A real coin isn't infinitely thin — shear in the metal drags the higher modes slightly below the ideal — so this coin's computed reference lands at 1 : 2.30 : 4.00. Spacing near those ratios is the fingerprint of a struck disc, and Coin Pinger rejects taps that don't fit it (keys, glass, a coin lying on a hard surface).

And it's why a fake can't hide: change the metal and √(E/ρ) changes, so every mode moves. Struck in lead or a plated base metal instead, the ring would land far lower and die out with a dull, short thud — its c0d2 would land near ≈2050 Hz instead of 4595 Hz. Density can fool a scale; the ring can't be faked without the right metal.

We publish this as a High confidence reference. Computed from well-established silver elastic constants and cross-checked against same-size sibling coins.

Free-plate modes per A. W. Leissa, Vibration of Plates, NASA SP-160 (1969, public domain). See how we measure them →