50 Pfennig
€371,406.00
| Issuer | Keitum, Municipality of |
| Year | 1921 |
| Type | Local banknote |
| Value | 50 Pfennigs (50 Pfennige) (0.50) |
| Currency | Mark (1914-1924) |
| Composition | Paper |
| Size | 101 × 71 mm |
| Shape | Rectangular |
| Printer | Friedrich Ball, Westerland-Sylt, Germany |
| No. printed | |
| Designer(s) | Reus |
| Engraver(s) | Obverse: Friedrich Ball Reverse: Reus |
| In circulation to | |
| Reference(s) | P#GRM:685.5-1/3 |