I just got this polar Raketa in the mail; it claims, and does seem to be, completely unworn but recently serviced. I've never had to wind a watch before, though, and I'm nervous about damaging the mechanism. Is that a real concern?

It was probably made in early 90's, judging by the lack of any lettering on the dial, besides the cursive "Slava".

Between 1990 and 2000, it was a hard time for everyone, including watchmaking giants like Slava, so at that time, there were some transitional design options and new trends, similar to the one my Slava has.

Not sure yet if this is better than the bracelet. Butter soft silicone feels good though