It's the classic old Strela style and that looks like an exceptional example. I'd expect it to sell for around £600+. Prepare to spend much more if it needs a service - spares for the old 3017 movement are increasingly difficult to get hold of.
Alternatively, has your friend seen the more modern reissues with the Poljot 3133 movement? Cheaper, more reliable and easier to get hold of parts. There's also a version with a Chinese Seagull movement but I'm a Russian watch snob so bleurgh.