20 Cents Nicolaas J. Diederichs
€2.00
| Issuer | South Africa |
| Year | 1979 |
| Type | Commemorative circulation coin |
| Value | 20 Cents |
| Currency | Rand (1961-date) |
| Composition | Nickel |
| Weight | 6.0 g |
| Dimensions | 24.2 mm |
| Thickness | 1.84 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | Obverse: Lourens de Lange Reverse: Tommy Sasseen |
| In circulation to | |
| Reference(s) | KM#102, Hern#D174 |