Staying firmly on communist ground, we move from Russia to China. This is one of Torsten’s watches, and he is a keen collector of Chinese watches with a very sizeable collection. This Shanghai is apparently a rare beast, and in need of TLC.
A first look isn’t too promising. There seems to be quite a bit of rust…
The auto winder is an odd construction. It’s basically the Seiko-type ratchet wheel with tines alternating at driving the ratchet wheel, moved back and forth by an eccentric pinion mounted on the oscillating weight, but much more complex, as the tines of the fork are individually mounted on a plate and held against the ratchet wheel by a spring.
One of the case clamps is “hand made”, and I will leave it in place as it’s part of the history of the watch. I quite like these little touches 😉
This is the auto winder bridge from the bottom, and the eccentric pinion driving the auto winder fork is visible.The bottom plate with the date wheel.
All parts cleaned and ready for reassembly.
The balance is carefully poised, so quite a bit of work went into making this movement.
The base movement back together and ticking.
This isn’t too shabby, considering that I couldn’t find a new mainspring that fitted.
The movement is back together and ready for the dial and hands.
And the dial and hands are back on.
The pendant tube is stuck in the crown (it’s a screw-down crown), and I get it out. The fit to the case is very loose, so I will have to glue it in using a 2 component glue.
The pendant tube is back where it belongs. Drying time at least 2 days before you let the crown near!
A Chinese Diver’s watch with a screw down crown. I wonder how many of those are still around…