Hello, I inherited a vintage Wostok 2605 watch and I would be grateful if you could answer me three questions. I have done some research on the internet, but all I have found out so far, is that this watch could be made between 1950 and 1989. Sorry for its dirtiness, but watch services in my country aren't any good as they told me to get myself a new watch and the crack is a result of my relative's hard work. Can you please tell me the exact year or an approximation of when it was made? I have found only one watch with the same logo - WOSTOK on the internet, different model though, but all legit watches called Wostok seem to have a line above them; is this a real Wostok watch, if so, is it considered rare? Date field seems to get stuck everyday it changes, so it displays me half of the actual date and little from the day before, unless I wind it in the morning to 10 pm and back - then it works normally, but only for a day; how can I fix this? Thank you in advance.
http://imageshack.com/a/img838/8080/3b1q.jpg Front
http://imageshack.com/a/img841/138/ki140.jpg Back
http://imageshack.com/a/img838/8080/3b1q.jpg Front
http://imageshack.com/a/img841/138/ki140.jpg Back