Sargent e Greenleaf Movimento per timebination e time lock STD

Description

Sargent e Greenleaf Movimento per timebination e time lock STD

Fits three-movement and two-movement time lock cases. The standard movement can be set up to 144 hours. This is a “gradual unlocking” device. It cannot be back-wound if too much time is accidentally wound onto the movement. Precision made, 13-jewel, Swiss mechanism.