Item #G32014
Silver frame, with iron core, magnetic, maker marked "Fr." (Gebrüder Friedländer, Berlin) on the reverse, 43.2 mm, vertical pinback, dark patina, better than extremely fine.
Footnote: Gebrüder Friedländer, Berlin (Friedländer Brothers of Berlin) served as the official crown jeweller of Prussian Princess Louise. (C:171)