Where is the click on this one?

[Woolshire]

I’m just curious where it is on this one. I’ve seen Patek pocket watches and wristwatches of this design (don’t worry, this is an internet image.) I’m assuming that the click is hidden under the thin plate over the barrel and that you would remove those three screws and the click would be there? Anybody have a photo with that removed?

[rodabod]

It's the long thin spring running down theleft hand side of the barrel bridge. Look at a Smiths 12.15 or a LeCoultre Cal 450.

[Woolshire]

Okay, so that whole edge moves out when the watch is wound?

[Klassiker]

The whole blade-shaped spring moves, especially the bottom end, which is shaped to catch in the teeth of that wheel. It looks like the spring bends at the thinned section, and a screw from the side at the very top end holds it in place. Seiko use a similar but simplified system.