20 Mark - Thale am Harz
€1.00
| Issuer | Thale am Harz, City of |
| Year | 1918 |
| Type | Emergency coin |
| Value | 20 Mark |
| Currency | Mark (1914-1924) |
| Composition | Bronze (Gilded) |
| Weight | 5.1 g |
| Dimensions | 24.0 mm |
| Thickness | 1.5 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | Funck#537.12, Men18#31187.4 |