German, c.1900, engraved 'Carl Zeiss Jena Nr.527' constructed of lacquered brass and black enamel, in original case with label for 'Herrn H.E.Max Heymann' case 27
German, c.1900, engraved 'Carl Zeiss Jena Nr.527' constructed of lacquered brass and black enamel, in original case with label for 'Herrn H.E.Max Heymann' case 27
Auction: Science, Medicine & Early Technology, 1st May, 2024