George III Silver pr Salt Cellars Dishes JOHN MUNS London c1764. English Sterling Silver – pr Salt Cellars / Dishes by John Muns of London circa 1764 – total weight is 2.37 troy ozs. Marked: hallmarked with the makers mark I. M, lion passant, leopard’s head crowned, date letter “i”. Measurements: 2 5/8″ in width ..