Bought these on a whim a couple of years ago..I don't see what the big deal is about them except they are build like a tank.
The eyecups are a little flat and there are the usual military surplus tings and such..glass is excellent.
Here is a description that I stole from Snipers Hide.
DF 7X40 ZEISS NVA BINOCULARS
A pair of DF7X40 Individual Focusing Checkpoint Charley Binoculars, Optical quality of these is unsurpassed for the price. The DF 7 X 40 Binoculars are commonly thought of as the best binocular to come out of the Carl Zeiss Jena Factory. These Binoculars were used by the NVA (National Volksarmee) (East German Army) for surveillance purposes; they are commonly called the Berlin Checkpoint Charlie Binoculars.
INCLUDED, DF7X40 Binoculars, Ocular Lens Filters (Green), Objective Lens Covers, Original Military Neck Strap, Range Finder (built in),
Oversized Ocular Lenses (22mm), Infrared Detection,Nitrogen Filled, Completely Waterproof, Rugged Military Specifications, Full Rubber , Armor Coated, Individual Focusing with Diopter Adjustment, nternal Range Finding Reticle (Illuminated), Low Light Ocular Filters (Green), Zeiss Multi Coated optics, Zeiss Lenses For Maximum Clarity, Sharpness And Color Definition, Rubber (compressible) Eyecups For Eyeglass Wearers, Suitable For Use With A Gas Mask
Ebay has em for $175 + lots of shipping costs.
$150 via Paypal shipped in the Con US