It is an 8000 with the UHC case and the crown regulator. This was actually quite cheap - and much less expensive than the blue one I got a couple of years ago. The faceted crystal is scratched, as they always are, but I do like these interesting pieces.Sweet! Is it a 8050 or 8200?
Do you have a photo of the engraving on the back, some one will be able to translate it and tell you what station or area it was originally issued at. they are a great and very accurate watch