| Number | KM# 22 |
|---|---|
| Country | Australia |
| Period | King George V (1911 - 1936) |
| Coin type | Circulation coins |
| Denomination | ½ penny |
| Year | 1921 |
| Ruler | George V |
| Composition | Bronze |
| Edge type | Smooth |
| Shape | Round |
| Alignment | Medal (0°) |
| Weight (g) | 5.6 |
| Diameter (mm) | 25.5 |
| Thickness (mm) | 1.5 |