amanico[JLC Moderator]
373460
Finishings: Breguet Classique Tourbillon Extra Thin.
I posted this picture, recently, in my visit to the Manufacture:

Here are some other pictures sent by my contact, showing the details of the finishings:

Beveling:

That one, I did it... Well, it was not a convincing outcome....
Now, the engraving:

And the guillochage.
All by hand.
Best,
Nicolas