Trial piefort in silver of the 20 francs Grimaldi coat of arms

Obverse

Obverse legend

Reverse legend

Reverse

Retouched photo of a coin sold by Monnaies d'Antan (modification of the color for a better visual rendering of the original result), link to the sale: https://www.acsearch.info/search.html?id=1588190, link to their website: http://www.monnaiesdantan.com/.