Carl Zeiss Jena microscope lens 10 / 0.30 1944

•      For a microscope - most likely a large research microscope from the 2nd World War - so probably the engraving of 1944, the year of the war
•      Length about 32 mm
•      Thread Diameter 20mm
•      Material: Brass with fine old patina

In very good used condition, works perfectly, sharp images, no dust, scratches or fungus in or on the optics (lens), you will see at the pictures.