Published in Spring 1986 Zeiss Historica Journal
Author: Maurice Zubatkin
See Page 9 – 10
A discussion on the various Zeiss Ikon trademark names for the same or similar cameras such as the Super Ikonta B, Super Ikomat B, Super SIx and some other variants within models of the Super Ikonta D (some were 18 cm long while others were 20 cm long) and some film size considerations.
To go to the Journal itself click on the year 1986 in the first line above.