GOOD BALANCE Quarter Repeater Pocket Watch Movement, Possibly LeCoultre

  

The movement is missing many parts and there isn't a maker's mark however the central bridge that connects to the hammers looks very similar to those on LeCoultre quarter repeaters. Also included is a small mystery part possibly a collet?

That was in the container with the movement. The balance wheel measures about 14.1mm across including the screws around the outside however this isn't a precise measurement as i didn't want to risk damaging the balance assembly.