Austrian 100 Corona Gold Coin specifications and ping frequencies
The Austrian 100 Corona Gold Coin is a gold coin from (1909–1915), weighing 33.87 g with a diameter of 37 mm. Tapped gently on its edge, a genuine one rings at about 2.9 kHz, 6.9 kHz and 12.0 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 | 2938 Hz · 6909 Hz · 12039 Hz |
|---|---|
| Metal | Gold |
| Composition | 90% gold, 10% copper |
| Weight | 33.87 g |
| Fine metal content | 30.483 g |
| Diameter | 37 mm |
| Thickness | 2.3 mm |
| Face value | 100 Corona |
| Issuer | Austria |
| Years | 1909 - 1915 |
Compare with the ping frequencies of every supported coin.
How to Spot a Fake Corona
Counterfeit Austrian 100 Corona Gold Coin 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 33.87g)
- 🚨Wrong diameter (should be 37mm) or thickness (should be 2.3mm)
- 🚨Dull or muted ping instead of clear, warm ring
- 🚨Magnetic attraction (genuine gold coronas are not magnetic)
About the Corona
The Austrian 100 Corona was originally minted from 1908 to 1915, featuring Emperor Franz Joseph I. The 1915-dated coin has been officially restruck by the Austrian Mint continuously since then, making it one of the most widely available gold bullion coins in Europe. With nearly one troy ounce of pure gold content, the 100 Corona restrike offers an affordable entry point into gold bullion investing.
Authenticate Your Corona on the Go
Download Pingcoin for iPhone or Android to instantly verify your Corona and other precious metal coins using acoustic authentication.