Huge beat error, low amplitude (even for a Seiko), and a very irregular beat rate.
Like a lot of Seiko automatic watches, you can’t manually wind this one. The crown pulled out to the first position sets the day in one direction, and the date in the other. Pulled out to the second position, you can set the watch.
The luminous compound has attacked the metal of the hands, and they are corroded. I won’t be able to fix that without making the luminous compound come off – I will very slightly slide them over a polishing cloth, but that’s all I can do without having to relume.
The day wheel is Spanish and English.
The bottom plate is fairly complex in its layout, but, as a reward for this complex construction, the date and day change and the quick-set function work extremely well. Watch and learn, Tissot and Omega of the same era!
Everything in good condition. I’m not a huge fan of plastic wheels, but they do the trick.
Having removed the auto-winder assembly, I can take the balance and wheel bridge off. Barrel and wheel bridge are one here, which makes reassembly a bit fiddly. Oddly enough, the third and fourth wheel are not jeweled.
The balance top jewel assembly ready for cleaning.
A simple, but effective click construction. No spokes in the third and fourth wheel, but holes, which are cheaper to manufacture.
Quite a lot of parts for an automatic day/date.
Mainspring greased and the barrel ready for closing.
I start off by putting the balance jewels back together.
Wheel bridge back in and balance swinging.
Now I put together the bottom plate.
I tried to clean up the hands with a polishing cloth, but the damage the luminous compound has done isn’t that easily reversible.
After casing the movement, I put the rotor back on.
This is a lot better than before. The watch isn’t new, and you can tell, but compared to what it looked like before, this isn’t bad. Seiko watches always have a pretty low amplitude, so nothing wrong there. The waves are gone, and I’ve adjusted the beat error.