riksuo
23
A watch service question.
Hello guys
According to the information i know, ALS uses the untreated German silver for movement plates and bridges, German silver reacts very slowly when exposed to oxygen in the air and in the course of time, this alloy is coated with a beautiful golden-yellow patina that protects the material against further oxidation. However, this golden-yellow patina will be removed during watch services. So, the question is, I am worried about the movement plate and bridges will be thinner and thinner after many times of service, since to generate golden-yellow patina , surface German silver of movement have to be used and removed during service.
Anyone could share some useful information for this issue?
very appreciated. 
have a good day , everyone ~
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22 replies4618 views
A watch service question.
Hello guys According to the information i know, ALS uses the untreated German silver for movement plates and bridges, German silver reacts very slowly when exposed to oxygen in the air and in the course of time, this alloy is coated with a beautiful golde...
The patina is a beautiful color! To your question, ...
I think we'll all be long dead and buried by the time that becomes an issue, since we're talking about so little material.
Wnenver I ask Alkis whether one of mine needs service...
.. he first checks the color of the movement, and see if it needs servicing (not only that is what he checks. of course). So, that means the color of German silver is one of the indications of the timing of service, and it would be removed (polished or so...
So interesting...
just got an email from Alkis with no specifics but confirming that the silver loses it's aging patina. Thanks for bringing this up. I guess the langes I have seen with a very distinct yellow have not been serviced in some time.