Published in Spring 2007 Zeiss Historica Journal
Author: John Schilling
See Pages 2 -4.
The author (a former member of the Zeiss US staff specializing in microscopes) compares two microscopes that came out as new models from both Carl Zeiss Oberkochen and VEB Carl Zeiss Jena in the years immediately after the war. The East German variety was known as the Citoplast and the West German as the Zeiss Opton (later Carl Zeiss) Stereo Microscope. In many respects these two instruments were virtually clones which means that the design was begun in Jena during the war and someone carried it to West Germany in their memory bank. These models were replacements of the Greenough or X stand. They were not identical but clearly from the same parentage.
To go to the Journal itself, click on the year 2007 in the first line above.