25 Pfennig
€215,501.00
| Issuer | Altona, City of |
| Year | 1921 |
| Type | Local banknote |
| Value | 25 Pfennigs (25 Pfennige) (0.25) |
| Currency | Mark (1914-1924) |
| Composition | Paper |
| Size | 70 × 70 mm |
| Shape | Rectangular |
| Printer | |
| No. printed | |
| Designer(s) | |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | DeNG 1/2#0030.1-2/6 |