The zigzag line between marks (Tremolierstrich in German) was used to take silver sample by the assayer to test the purity.
But when done by an experienced assayer it looks completely different (even grooves matching hand movement).This one was done to imitate old silver.
“Jungfraubecher” (Young Lady Beaker) wedding / marriage cup.
In old Nürnberg, the noble Kunigunde fell in love with a young silversmith. Kunigunde’s wealthy powerful father did not approve this and had the suitor arrested but imprisonment did not change his daughter`s love.
The father, having seen Kunigunde getting ill,made the following proposal: “If your silversmith can make a chalice from which two people can drink at the same time without spilling one single drop, I will free him and you shall become his bride.”
The skirt is actually a cup and raised arms hold a smaller cup that swivels so that it could be filled and then swung towards a second drinker.