I've still not finished with the various bits of building maintenance round here, so not much in the way of actual watch repairs going on, but I gave another of the freebie junk lot generic quartzes a quick polish and a new battery.
I'm not fan of fabric nato straps, but this was what it came with, so it got a clean too. It has no brand name, but is reasonably well constructed, all be it with a pot metal body. Mineral glass and a two hander Chinese movement, and not much else to report.
So it is either try to retrofit another or replace the whole movement? Or maybe replace the whole shock? I will try to grind a bit the extended edges of the new spring to see if it fits and come back! Sent from my iPhone using Tapatalk
So far as I recall, you press the silver button to the right of the stem in the picture. I can't be certain which position you need to be in, but I think it was the wind position.
The hairspring... 5 minutes and you will have that sorted
It does look unfankleable but you will have your work cut out. The real question is why is it mangled in the first place. Has something jammed up and "bounced" the spring out of the side of the balance, or is this simply the result of fat thumb trouble on the part of the previous owner?
I handle many 6R15 watches and none shown to be very sensitive to temperature, so you would have to take timegrapher pictures taken at controlled temperature.
Anyway to help you with expectations I'm attaching the Technical Guide, like it or not Seiko specifies an acceptable accuracy on the wrist from -15 s/d to +25 s/day with temperatures between 5° and 35° C. But as mentioned with good regulation most pieces do better than that.