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Message: <blockquote data-quote="jring" data-source="post: 3497615" data-attributes="member: 133897">Hi Ben,congratulations on a great score, 80 quid is a steal for this rare pair. The normal EDF usually command several hundred euros on ebay... The serial number (if I read it correctly as starting with 6064) shows this as made in 1984 - so CZJ sold what is essentially the general issue optics for the east german army to the enemy at the height of the cold war - with a warranty card in english to boot...Well, at least they seem to have left out interesting bits like the recticle with (tritium based) illumination and the infrared detector...The yellow tint is quite natural then as the EDF used a radiation resistant glass called SF3R for the objective negative element and the first eyepiece lens which leads to the color bias.More info on the EDF can be found on the following pages (in german only - try google translate). Holgers excelent english pages have already been linked above...<a href="http://www.akoehler.de/fernglas/edf7x40/index.htm" target="_blank">http://www.akoehler.de/fernglas/edf7x40/index.htm</a><a href="http://home.arcor.de/thuernagel/edf.htm" target="_blank">http://home.arcor.de/thuernagel/edf.htm</a>If you have specific questions on the german paperwork, just post an image and I'll translate...Joachim</blockquote>