LeCoultre manual winding with small seconds Ref. 789137, which appeared in the 1960s. It houses the Caliber K818/CW with 17 jewels, which beats at a frequency of 18000 vph. Beat rate is a little high but amplitude and beat error are good. Measures 34 mm without the crown. Case is 14k white gold with diamonds lining the bezel. Lovely balance between flashy/minimalist.
