8-day spring movement with balance-wheel regulator, winding and hand-setting at the front. 1h and 1/2 hour strike.

type of strike: 2 hammers on top, Double bells Ø 42/46mm 
Fixing: by 3 straps or central fixing in conjunction with blind plate order No. 063090
Dimensions: Ø 90mm
depth: 57mm
Minute hole: 2.0 x 2.0 mm
Hour hole: Ø 4.5 mm