| Issuer | German Democratic Republic |
| Year | 1979 |
| Type | Coin pattern |
| Value | 20 Mark (20 DDM) |
| Currency | Mark (1948-1990) |
| Composition | Copper-nickel |
| Weight | 15 g |
| Dimensions | 33 mm |
| Thickness | |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#PR22 |
| Obverse description | Denomination with state emblem underneath. Lettering around the edge. |
| Obverse script | Latin |
| Obverse lettering | DEUTSCHE DEMOKRATISCHE REPUBLIK
20
PROBE MARK
A (Translation: GERMAN DEMOCRATIC REPUBLIC 20 SAMPLE MARK A) |
| Reverse description | Splitted leafs |
| Reverse script | Latin |
| Reverse lettering | 1949
1979
30. JAHRESTAG
DER DDR (Translation: 1949 1979 30TH ANNIVERSARY OF THE GDR) |
| Edge | Smooth |
| Mint | |
| Mintage | 1979 A - - 10 000 |
| Catalog ID | 1638056460 |
| Comments |
