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20 Mark Ernst Abbe
| Issuer | German Democratic Republic |
| Year | 1980 |
| Type | Non-circulating coin |
| Value | 20 Mark (20 DDM) |
| Currency | Mark (1948-1990) |
| Composition | Silver (.500) |
| Weight | 20.92 g |
| Dimensions | 33 mm |
| Thickness | |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | V. Beier, J. Rieß |
| In circulation to | |
| Reference(s) | KM#78 |
| Obverse description | Legend divides state emblem and denomination |
| Obverse script | Latin |
| Obverse lettering | DEUTSCHE
DEMOKRATISCHE
REPUBLIK
20 MARK
1980 |
| Reverse description | Early optical instrument, dates below |
| Reverse script | Latin |
| Reverse lettering | ERNST ABBE
1840 * 1905 |
| Edge | Lettering: 20 MARK * |
| Mint | |
| Mintage | 1980 - - 40 000 1980 - Proof - 5 500
|
| Catalog ID | 9699853360 |
| Comments | |