The Carl Zeiss Jena "kleines Werkzeug- / Messmikroskop" (Small Toolmakers and Measuring Microscope) is a small benchtop microscope manufactured by Carl Zeiss Jena (former East Germany) since the 1940s. Throughout its production run, it was available in black, green, hammer-tone, and cream (ivory) finishes.
Interestingly enough, the Chinese company "Shanghai Optical" still produces copies of this microscope under the model name "15J microscope".
In the photo gallery, you will see pictures of the two units I own—one in gray and the other with a hammer-tone finish.
The last photo in the gallery shows an offer from a Chinese manufacturer, proving that the Chinese copies made today are identical to the original.