FRANCE: Silver jeton (1777 dated) Royal Academy of Sciences. Bust of Louis XVI facing right on obverse. Pallas seated on the left, surrounded by scientific instruments, a terrestrial globe, plans and a saurian on reverse. Inside slab by NGC "MS 61 / ROYAL ACADEMY OF SCIENCES". Unique in pop in both companies. Cert number: 6633415-017. (F# 4412).