A ladies diamond wristwatch, circa 1960, the round silvered dial signed Optima with applied baton numerals having a 17 jewel manual wind movement, signed Sellita watch Co. Movement, to an 18ct white gold case and diamond set bezel, with further diamonds set to the integral graduated white gold box settings, total diamond weight 4.80cts with four additional cubic zirconia set links, total length 165 mm, total weight 27.35gms, 11 mm diameter