In a very good, slightly worn condition. The core with all of the black paint, the frames with patina.
Marked on the ring with „75“ a still unknown maker. Three piece construction and magnetic.
Difficult to find maker.

In a very good, slightly worn condition. The core with nearly all of the black paint, the frames with patina.
Marked on the ring with 66.“ For the company of Friedrich Keller, Oberstein. Three piece construction and magnetic.
Very uncommon maker.

In a somewhat worn condition. The core with most of the black paint. The frames with patina and showing signs of use and age.
Marked on the ring with „75“ a still unknown maker. Three piece construction and magnetic.

In a very good, slightly worn condition. The core with all of the black paint, the frames with patina.
Marked on the ring with „75“ a still unknown maker.
Three piece construction and magnetic.

In a very good, slightly worn condition. The core with practically all of the black paint, the frames with patina.
Marked on the ring with „75“ a still unknown maker. Three piece construction and magnetic.

In a very good, slightly worn condition. The core with nearly all of the black paint, the frames with patina.
Marked on the ring with „75“, an unknown maker. Three piece construction and magnetic.
Uncommon maker.

In a very good, unworn condition. The core with all of the black paint, the frames with patina.
Marked on the ring with „76“, for the company Ernst L. Müller, Pforzheim.
Three piece construction and magnetic.