In a very good, slightly worn condition. The core with all of the black paint, the frames with patina.
Marked under the hook with „L/52“ for the company of C.F. Zimmermann from Stuttgart. Three piece construction and magnetic.
Unusual positioning of the maker mark.

In an excellent, probably unworn condition. The core with all of the black paint. The ribbing in matt white silver, the flanges burnished and all with some slight patina.
Marked on the reverse with „L/52“, for the company of C.F. Zimmermann from Pforzheim. Three piece construction and magnetic.
Very difficult to find in such condition.