Former ZENITH cockpit clock in a plexiglas case from the 30 ies

ZENITH cockpit clock in a chrome-plated brass case of 8 cm diameter with 8-day-manual-winding-movement cal. 260.

Highly innovative winding/adjustment mechanism by turning and pulling the knurled bezel. Warning when the watch is running down by the appearance of a red signal dot below the 12.