20 sen 1981
| Value | 20 sen |
| KM# | 18 |
| Year | 1977-1993 |
| Material | Copper-Nickel |
| Weight, g. | 4.5 |
| Diameter, mm | 23.5 |
| Orientation | medallic alignment ↑↑ |
| Value | 20 sen |
| KM# | 18 |
| Year | 1977-1993 |
| Material | Copper-Nickel |
| Weight, g. | 4.5 |
| Diameter, mm | 23.5 |
| Orientation | medallic alignment ↑↑ |