Where this ring does?

[brunomartins]

Hello, I am Bruno.

I have just begun watchmaking (or trying). This project is an Junghans 687.

I could not identify where this ring is from. I think it may be part of the winding or keyless parts, but couldn’t place.

 

[spectre6000]

I've seen rings like that used as spacers on the crown wheels. Take off the two screws and plate holding it down, and you might find it goes in the center of the wheel between the wheel and its pivot.

[brunomartins]

2 hours ago, spectre6000 said:

I've seen rings like that used as spacers on the crown wheels. Take off the two screws and plate holding it down, and you might find it goes in the center of the wheel between the wheel and its pivot.

Thank you.