Thanks for your help!
Been offline these two last days. I have a new job and little time to surf the forums.
@Lancelot: you have pm. I am glad that you like the watch..you know I asked my watchmaster to replace crystal but you says you have done more modifications to make it waterproof. Nice!
I have to say that I didnt add nor remove any part to the mbw 1680. All of you know that mbw vintages do have a retaining ring like the genuine. This retaining ring pushes the crystal so it cant move..After the crystal and retaining ring are secured you can put the bezel again.
I remember that sometime ago a similar topic like this was discussed and some members (me included) comented that in order to fit the genuine crystal you had to trim down the side of the tropic crystal with a hand file..after that you had to polish the side of the crystal too.
I think all of this is because the retaining ring is thicker than the genuine therefore the gen crystal hardly fits unless modifed.
you may remember I told you this and also suggested you to get a new aftermarket retaining ring for your watch to avoid future modifications. Did you get a new retaining ring? If yes, where? Borel & Jules?
All this mods have been performed by my local watchmaster here in Spain, but most people decide to do this themselves. In the end they are saving money by doing this themselves.
Lancelot, my watchmaster did this to your watch and now he has done this to my new mbw 1680 which will go for Lazarini.
Again thanks everybody for your help.
Neil thanks for the song, this thead would have never been the same without your input.
And yes you are right, people dont go swimming with expensive timepieces.