This watch was 20 minutes slow a day. It stopped now and then, so time for a service.
In the spa, ready for the ultrasonic
Preparing the oil and grease
Assembly of the top plate. Mainspring, geartrain assembled
Gear train bridge assembled
Assembly of the bottom plate
Ready. Now we can start on the dial/hands
Hands attached. Wel I forgot to take a pic of it, so its a crop of the first pic
Cased up, Rotor assembled
A quick check on the timegrapher. Not bad for a Seiko this old. Amplitude is a bit low, but with these Seiko’s this is often the case. The next day it had 210 degrees.
And ready for return to its owner