Another day, another Constellation. Gold case, and a 354 bumper movement, so what’s not to love? The dial has a bit of patina, but I always quite like that, as it adds to the charm of the watch.
It needs a service, so let’s go!
The Constellation case back with the Geneva observatory.
The case is 18k gold.
First look at the bumper movement.
Oopsy – that doesn’t look too good. The timegrapher can’t even pick up the beat rate and beat error.
The dial with the discolouration – quite nice. Almost looks like a design 😉
The bottom plate – you can see that the set lever spring is broken, and there is no dial washer.
The top plate.
There is a special Bergeon tool for removing the wheel that drives the second hand.
One of the pallet bridge screws has a broken head. My supplier doesn’t have one, and my client wants the original screw. We finally find one at Jules Borel, and including shipping, you could buy a watch for the money we have to pay …
The gear train.
The broken set lever spring.
Everything ready for the cleaning machine.
My next-to-last bumper mainspring – I have to get some more of these in, they aren’t easy to get.
Mainspring in the barrel.
The escape wheel, pallet and cap jewels are treated with epilame.
The new pallet bridge screw – far more expensive than gold!
Now the movement can come together.
And here it is, ticking happily.
That looks quite a bit better than before!
The automatic bridge goes in.
And the hands and dial back on.Cased and ticking again!