A mid 20th century Wittnauer Watch Company diamond cocktail watch, A mid 20th century Wittnauer Watch Company diamond cocktail watch, the circular silvered dial with gold tone Arabic hour markers, within a single cut diamond case, to the similarly cut diamond brick link sides and later folding clasp, signed 15 jewel movement, estimated total diamond weight 1.20cts, length 18.5cm, gross weight 18.6g.