Thank you so much for your time , is very especial for me the information.
I bought recently in a auction for 2300 euros , and I gonna enjoy my watch and after maybe put in sale on chrono 24, I send more photos for you investigation.
Also I'm watchmaker and just changed the crown for a pie pan crown.
Wath do you think about the polishing, I think a fine polishing is better for the watches, without damage the case .