1 oz Silver Australian Kookaburra specifications and ping frequencies
The 1 oz Silver Australian Kookaburra is a silver coin from Australia (1990–2026), weighing 31.1 g with a diameter of 40.6 mm. Tapped gently on its edge, a genuine one rings at about 3.8 kHz, 8.6 kHz and 15.1 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 | 3762 Hz · 8646 Hz · 15103 Hz |
|---|---|
| Metal | Silver |
| Composition | 99.9% silver, 0.1% copper |
| Weight | 31.1 g |
| Fine metal content | 31.069 g |
| Diameter | 40.6 mm |
| Thickness | 2.8 mm |
| Face value | $1 AUD |
| Country | Australia |
| Years | 1990 - 2026 |
Compare with the ping frequencies of every supported coin.
How to Spot a Fake Kookaburra
Counterfeit 1 oz Silver Australian Kookaburra coins are increasingly common. Use the acoustic verifier above as your first line of defense, then check these key red flags:
- 🚨Incorrect weight (should be exactly 31.1g)
- 🚨Wrong diameter (should be 40.6mm)
- 🚨Dull thud or flat sound instead of clear bell-like ring
- 🚨Magnetic attraction (genuine silver kookaburras are not magnetic)
About the Kookaburra
First issued in 1990 by the Perth Mint, the Silver Kookaburra features Australia's iconic laughing kookaburra bird with a new design each year. It was one of the first coins to achieve .9999 silver purity and has become highly popular among collectors due to its annual design changes and limited mintages.
Authenticate Your Kookaburra on the Go
Download Pingcoin for iPhone or Android to instantly verify your Kookaburra and other precious metal coins using acoustic authentication.