Something a bit out of the norm today, a Vacheron Constantin Overseas that Robert had sent in for a service.
It has the calibre 1311 movement, which is a small miracle, and we’ll see in a minute why…
The timegrapher shows that the movement needs a service.
A first look at the movement. The rotor has a gold weight, and 27 jewels. It’s automatic, has a date, a quick-set function for the date, and a hacking second feature.
I take the movement out, and then the dial and hands off.
The dial is pristine.
And this is the unusual bit about the movement – the total height is 3.4mm thick! That includes the rotor and everything…
The bottom plate with the date ring. Very nice perlage decoration.
Another look at the top plate. I like the two little arrows – one indicates where to release the winding stem, and the other how to let down the mainspring.
Unfortunately, somebody with a slightly too large screwdriver removed the oscillating weight screws, and damaged the little round plate a bit.
With the rotor and balance removed, you can see the little stop lever for the hacking second feature.
The gear train on the left, and the winding gears on the right. The rotor is unidirectional, e.g. it winds in one direction, and just turns freely in the other.
The wheel bridge is removed, and you can see the barrel and the decoration on the plate nicely.
The little central second pinion.
That mainspring certainly needs a good clean…
Now I can take apart the bottom plate.
Almost there – just the yoke and setting lever left.
Once I have cleaned all the parts, I start off with the mainspring. I have put some braking grease on the barrel wall, and greased the mainspring.
Then I put in the balance jewels.
With the barrel bridge mounted, I put the gear train and the winding gears in.
The wheel bridge is on, and I put on the stop lever.
The movement is beating again.
A first adjustment, I will do the final adjustment once the movement is cased. I think the lift angle is a bit lower than 52 degrees, but I can’t find any documentation on that.
The gears for setting, winding and the date ring go in.
Everything is beautifully executed.
With the movement complete, the dial and hands go back on.
I case the movement without the rotor.
Then I put the rotor in, and seal the case.This VC is in very good overall condition.