Breguet caliber 507DRF
507DRF description
Hand-wound movement. Second time-zone indicator. Day/night indicator. Off-centred local time subdial in silvered gold, hand-engraved on a rose engine. Black off-centred reference time subdial in gold, hand-engraved on a rose engine. Power-reserve indicator on the back of the movement. Silicon balance spring with Breguet overcoil.