Published in Autumn 2006 Zeiss Historica Journal
Author: Brian Paul Calen; Hans Seeger
See Pages 7 – 13.
This article discusses the discovery of a unique (meaning one of a kind) high luminosity binocular with a 70 mm diameter objective lens. Clearly a prototype that slipped out of the control of Zeiss and into the hands of an American collector. The specifications of this glass are clearly of the highest contemporary quality and design.
To go to the Journal itself, click on the year 2006 in the first line above.