Swiss gold, enamel, diamond set open faced lever Circa 1865

A rare Swiss 18 carat gold, enamel and diamond set open faced pocket watch, circa 1865. 13”’ manual winding gilt lever movement with moustache escapement, cut bimetallic compensation balance. White enamel dial, Roman numerals, outer minute track and blued steel Breguet hands. Case with blue enamel centered by a foliate spray set with rose cut diamonds. Case signed, 18 carat gold engraved cuvette signed and numbered. With an Extract from the Archives confirming date of sale on 26 September 1869. Additionally confirming blue enamel and diamond decoration.