Description: Brass and steel experimental ‘ebauche’ of a watch movement (49.6mm diameter). Going barrel with bridge and oversized and uncut winding square. Two bridges fixed by one screw each on dial side. Recesses for wheel work and holes for pinions and fixation of other bridges present. Unusual straight spring engaging with a steel pin in barrel work. The movement would have had a ruby cylinder escapement system.
Provenance: Ex. George Brown, thence by decent
Additional Info:
The spring engaging with the main spring barrel would be necessary for activating a power reserve indication. This unfinished movement was most probably conceived to test for the needed mechanism located underneath the dial.
Antiquarian Horology 