X12 compensating microscope eyepiece, by Carl Zeiss, Jena, German, 1880-1901 X12 compensating microscope eyepiece 1880-1901
X8 compensating microscope eyepiece by Carl ZEiss, Jean, German, 1880-1901 X8 compensating microscope eyepiece by Carl ZEiss 1880-1901
Projection eyepiece, and projecting prism in leather case, by Leitz, Wetzlar, German, 1949-1960 Projection eyepiece 1949-1960
X4 compensating microscope eyepiece, by Carl Zeiss, Jena, German, 1880-1901 X4 compensating microscope eyepiece 1880-1901
X18 compensating microscope eyepiece, by Carl Zeiss, Jena, German, 1880-1901 X18 compensating microscope eyepiece 1880-1901