10 francs Grimaldi coat of arms, centenary of Monte-Carlo

Obverse

Obverse legend

Reverse legend

Reverse

Retouched photo of a coin sold by cgb.fr (erasure the word ''essai'' for a better visual rendering of the original result), link to the sale and their website: https://www.cgb.fr/monaco-essai-de-10-francs-flan-bruni-charles-iii-1966-paris-spl,fwo_153959,a.html.