Ladies automatic movement with butterfly oscillating weight. Used in Oyster Perpetual ladies models (refs 6503-6546) from 1950s-1960s. Subsidiary seconds.
Movement Type
Automatic
Frequency
19,800 vph (5.5 Hz)
Diameter
20mm
Height
5.25mm
Rotor Type
central_rotor
Winding
automatic_bidirectional
Shock Protection
kif
BRAND
TYPE
COUNTRY
