MONACO. Rainier III, 1949-2005. 10 Centimes 1962 Piedfort Essai (Gold, 20 mm, 12.96 g, 12 h), Paris. RAINIER III PRINCE DE MONACO / 1962 Bare head of Rainier III to right. Rev. DEO / JUVANTE / 10 / CENTIMES / ESSAI Crowned coat of arms supported by a monk soldier. Gadoury MC146. KM PE13a. Of the highest rarity, mintage of only 25 pieces. Virtually as struck.