Tony sent this one in for a service and a new crystal, as it doesn’t work. You can wind it forever, but the movement doesn’t start up. So I guess it’s a broken mainspring.
A bit of dirt, but otherwise, it’s looking good. The plates are slightly discoloured, but that’s nothing to worry about.
The bottom plate is nicely decorated, as you would expect.
As usual, I start off with the top plate.
And that’s why the watch wasn’t working – the mainspring is broken.
A view of the gear train after removing the wheel bridge.
As usual, I start off with a new mainspring.
Having put the base movement together, I have a beat error of 2.9ms, and that’s too much. So out comes the balance, and I slightly turn the collet clockwise, and I hit it right on the nose!
That’s not being very good, that’s being lucky 😉
The top plate is complete.
The dial and hands go back on, and I’m ready for casing.
With a new crystal, the watch is looking great!