Silver coin rocker
Pic  CS 27 a

Little German silver coin tester. The rocker is named "FAVORIT" and proof the weight and thickness of a 1/2, 1, 2, 3 & 5 silver Mark and also of 1,2 & 5 new Mark. So this little Rocker test 8 coins !
The advertising paper cheat show this scale in two different styles and describe the function of them

Silver coin rocker
Pic  CS 27 b

This is the same scale like before but she test only the 5 coins of 1/2, 1, 2, 3 & 5 silver Mark.