Christian sent in this Seiko Bellmatic for a case polish and service.
This is an alarm watch with day and date display, so a fairly complex beast. The movement itself can’t be wound with the crown, but only the alarm. The crown has three positions – pushed in to wind the alarm, middle position to set the alarm, and pulled out to set the time and date. The pusher at 2 o’clock switches the alarm on and off.
The movement has 27 jewels.
The usual Japanese way to construct and auto winder.
The dial and hands do not only look good, but are in great condition as well.
The date ring has some discolouration and damage, but I can get hold of a new one.
Under the date/date layer lurks the alarm mechanism.
No lack of complexity here.
Now I can turn my attention to the movement itself. Note that the alarm spring doesn’t have a barrel, but is set directly into the plate.
As you can see, there is no lack of parts.
I start off with a new mainspring.
I start off with the base movement.
Putting together the bottom plate is the time consuming bit.
The old and new date ring.
Charles did another great job polishing the case and bracelet!