The Logo, which is engraved on the case back, and this is the first time I see that.
A friend of mine made me observe that your is a British 9 Cts YG Case...I didn't know that it existed in YG.
The Buckle, which is also in 9 Cts Gold.
May I ask you more pics of the buckle, please?
Best, and thanks, Lorenzo.
Nicolas, under the charm of your watch...