Every catalogued issue as a grid, with the photograph where a museum holds one. Mark what you have and it stays on this device. No account, no prices.
Every Australian coin has a weight fixed by law, and no two denominations share one closely enough to confuse once you also look at the colour. A kitchen scale reading to a tenth of a gram settles it. These are the statutory weights, not measured averages, so a worn coin reads light.
The three near-collisions are deliberate. The florin and the twenty cents differ by 0.03 per cent, the shilling and the ten cents by 0.03, the sixpence and the five cents by 0.08. The decimal coins were struck to the weights of the ones they replaced so that machines built for one would take the other.
| Grams | Coin | Era | Fine metal | Diameter, as the Act states it |
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Marking a coin writes its id into this browser's own storage and nowhere else. There is no account here and no server to send it to, so it will not follow you to another device, and clearing your site data clears it. It is a convenience, not a record.