I got this piece at a vintage clock and watch shop (aka "candy store") in Dresden. I'm still learning about the watch, which was made by GUB, Glashutte Uhrenbau ("Glashutte Watch Builder"). The Kaliber 74 was made from 1967 to 1980. A longtime Lange movement designer told me it was a very good movement design with slightly inferior parts to keep cost down. I trust her assessment. So far, it's been pretty accurate.
I used a butter knife to pop the back off. This thing must be new old stock cos the gasket is clean and intact and the movement is not degraded at all. Dial is fresh and so is the massively domed acrylic crystal. Winds nicely and has a great hypnotic, slow-beat tick. I had the shop owner swap the strap to a nice high quality brown pebbled leather, possibly Hirsch (it's German) which complements the watch nicely. I like having a cream dial and brown strap.
Enjoy the photos.
Movement. That spring clip on the rotor doesn't inspire confidence.
Pretty plain case back. Hey, it's from the old Eastern Bloc days!