Comments:

Recently I noticed a couple of “dirts” on the 3/4 plate of my Lange 1...

 
 By: Musigny82 : February 3rd, 2020-07:01
This watch was serviced in 2017. Shall I be concerned or I could just wait until the next regular service? I assume Lange will be able to clean this? Is anyone encountering the same issue?

Thank you for all your answers and advises!! Much appreciated!

Had the same issue with my Czapek a while ago . Had it removed straight after I noticed it .

 
 By: Watchonthewrist : February 3rd, 2020-08:28
But maybe thats because of my ocd 😉.

Hard to say without seeing pictures.

 
 By: als1678 : February 3rd, 2020-09:40
But german silver oxidizes over time. Old lange movements tend to get a beautiful patina, it is almost a pity that it gets stripped during service.

It IS a pity!! :) [nt]

 
 By: CR : February 3rd, 2020-20:30
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I was about to say the same. Normally German silver 3/4 plate gather patina, a yellowish tinge, and that enhances the beauty of the movement. I like it and it's not dirt at all. [nt]

 
 By: Pun : February 3rd, 2020-22:29
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Can you post pictures, my friend? [nt]

 
 By: amanico : February 3rd, 2020-23:41
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Here we go the picture! I understand that the German Silver gains the patina overtime but to me those are small dots instead of natural development within a certain area.

 
 By: Musigny82 : February 4th, 2020-00:11