Is there anyone who can accurately explain the function of the tremolierstich on the pieces in Germany?
I know that it was used for the assay of the metal, but by whom? the corporation? was it some kind of assayeur's mark like in Russia? In Russia tasters had their distinctive mark with their initials, they were considered in the same way as goldsmiths, why not in Germany? and how did this happen, did the taster take a sample of silver from the zigzag line and then check it? I'm curious to know this more in-depth information than only, it was traced for the assay of the precious metal.
thanks to whoever can enlighten me!
![Image](https://i.imgur.com/998fRmY.jpg)