1/4 chain change-over movement with 3 melodies (Westminster, St. Michael and Whittington) on 12-rod gong, duration 7 days, plate size 142 x 200 x 2.5 mm, 6 bronze bouchons, pallet lever with resting escapement (Graham) and automatic lever, real second, separate strike shut-off of the hour and melody strike with weight run-off and automatic night shut-off between 22.00 and 7.15 clock, integrated dial locking lever.