1 Mark
€337,165.00
| Issuer | Keitum, Municipality of |
| Year | 1920 |
| Type | Local banknote |
| Value | 1 Mark |
| Currency | Mark (1914-1924) |
| Composition | Paper |
| Size | 96 × 63 mm |
| Shape | Rectangular |
| Printer | Aug. Westphalen, Flensburg, Germany |
| No. printed | |
| Designer(s) | |
| Engraver(s) | |
| In circulation to | |
| Reference(s) |