Sekonda 17 Jewel USSR small, slim line dress watch

You are bidding on a Sekonda 15 Jewel wristwatch
The watch is small (I have a picture next to a 10p piece above)
The strap is only a few years old, I think the watch is possibly 1950's
There are a few digs where someone has tried to remove the back without the correct tool, but the watch is functioning well
Thank you