: thankd to you !!
: these watches are fantastic , so it's a pleasure to study and
: discuss about them.
: so your watch has neither reference and case number :
: 1) the lack of the engraving is not strange as in fact this is not
: a 1550 SG case due to the many differences we have pointed out.
: 2) what is not easy to understand is the lack of the case
: number.....
: when you will open the watch could you please take also a picture
: of the back inside
: ??

What is the procedure to open it ?
If I remember, it's a bit special on these bunds.
I need to remove pushers and crown to access to the movement ?
Is there a special trick to know ?

Thanks :)