Published in Autumn 1997 Zeiss Historica Journal
Author: Nicholas Grossman
See Pages 9 – 10.
In 1968, VEB Carl Zeiss Jena decided to expand to another location in the town of Eisfeld and moved the manufacture of binoculars to that location which was southwest of Jena. No change was made to the trademarks on the binoculars. The tried and true lens cell trademark still said Carl Zeiss in the top cell and Jena in the bottom.
To go to the Journal itself, click on the year 1997 in the first line above.