8-day spring movement with balance-wheel regulator with full Westminster chimes on a 5-rod
gong. The five hammers are fixed at the bottom.

type of strike: 5 hammers below, Westminster chime below 
Fixing: by 3 straps
Dimensions: Ø 90mm
depth: 57mm
Minute hole: 2.0 x 2.0 mm
Hour hole: Ø 4.5 mm