amanico[JLC Moderator]
401785
The crystal is often a weak point. Steam or humid ambiance can be a ...
Real problem for our vintage watch.
I have a watchmaker who told me once about a vintage watch of mine to not even wash my hands with it on the wrist.
And it is a vintage diving watch!
Keep the movement and the other parts of your watch in a dry environment, such as the one you put them one, for a whole week, then re assemble them.
Damn sad adventure!
Best,
Nicolas
Yes it's humidity
By: mpg13 : June 20th, 2016-07:24
A pattern inside the crystal indicates that it is not clean. Worst case is mold but more likely oil if the watch was just serviced. You should clean the inside of the case and crystal. Hopefully the movement is clean after service. Get some silica gel (Da...