Service history

[Dirt]

Originally Posted by gossbeau

If you remove the case back and take a loupe, there should be tiny engravings left by the previous watchmaker(s). I heard they always do that after they work on a watch and I have seen it on my previous watch too. It is like a code that they have between them to keep track on what has been done.
Correct me if I am wrong.

It is, and has been a common practice/tradition among independent watchmakers.

I have had lots of service work performed on quite a few watches through RSC's and in the main the RSC work wasn't inscribed on the inside of the case back except for some work that was performed in Geneva under special circumstances.
There is no need for an RSC to inscribe the case back because they essentially keep a global data base of all work performed on the watches available to them at any time.