| Obverse description | Ecu on a cartouche of the arms of François-Pierre Durocher, azure on a rock argent, on a chief of the same semé of ermine, stamped with a comtal crown. |
| Obverse lettering | INDEX TUTELA QUE PORTUS
DV (Translation: The touchstone and protector of the port) |
| Obverse script | Latin |
| Reverse description | Oval escutcheon on a cartouche, bearing the arms of the city of Nantes: a Nantes ship sailing to the left, on a chief charged with ermines, surmounted by a count`s crown, the whole surrounded by the cordelière. |
| Reverse lettering | DE LA MAIRIE DE MR DU ROCHER 1747. |
| Reverse script | Latin |
| Mint | |
| Mintage | 1747 - - |
| Catalog ID | 6037046870 |
| Comments |