1 Pfennig - Frederick Charles Joseph of Erthal
€1.00
| Issuer | Mainz, Archbishopric of |
| Year | 1779-1781 |
| Type | Standard circulation coin |
| Value | 1 Pfennig (1⁄576) |
| Currency | Conventionsthaler (1764-1803) |
| Composition | Copper |
| Weight | |
| Dimensions | 21.5 mm |
| Thickness | 1.4 mm |
| Shape and Technique | Round |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#387 |