| Location | Federal Republic of Germany |
|---|---|
| Year | |
| Type | Token |
| Composition | Brass |
| Weight | |
| Diameter | 20.8 mm |
| Thickness | |
| Shape | Round |
| Technique | |
| Orientation | Medal alignment ↑↑ |
| Edge | Plain |
| Period | |
| Notice | |
| Reference(s) | Men05#16106.1, Men18#20205.1 |
| Obverse description | Simple big number: 5 |
|---|---|
| Obverse script | |
| Obverse lettering | 5 |
| Reverse description | |
| Reverse script | |
| Reverse lettering | STADTERWEITERUNG= FESTUNGSBAU MAINZ |
| Mint | |
| Mintage | |
| Numisquare ID | 7584900550 |
| Comments |