Bruno.M1
4874
Marine Chronometer 'John Harrison'
Posted this a few days ago on the public forum.
Since it is a Girard Perregaux I will make an extra post here

One with a bit more info and some extra pictures
GP made these marine chronometers in 1993. 1993 because 300 years earlier in 1693 Mr John harrison was born. John Harrison was the inventor of the Marine Chronometer
some extra info from Wikipedia
To be hones tI always wanted a marine chronometer OR a JLC Atmos. Different things of course but I liked both. It took me several years to decide but as you see I bought the Marine chronometer.
About 2 or 3 years ago by AD showed me this GP. It was old stock , he once was a GP AD but that was long ago. Anyway when he showed me this piece I got more and more interested. I asked him if he wanted to sell it , not knowing if he wanted to sell it.
A week ago I decided to ask it again, not knowing if he still had it or not. And yes, it was still in his stock. And he wanted to sell it

So I bought it
The movement is a Poljot. It seems that originally Ulysses Nardin made these movements but somehow Poljot 'borrowed' the plans from UN
I don't know if Poljot got the permission or not, maybe the patents expired
Anyway, the Kirov company ( aka first Moscow watch company) made a lot of these movements. At that time it was very cheap to produce things in the CCCP or USSR, under a communist regime labor hours
don't count. In fact the only thing that has to be paid are the materials.
So after all these movements were finished pretty well, it did' matter if they worked some extra hours on such a movement.
The movement is gold plated solid brass, it has 15 jewels. 14 rubies and 1 diamond. I was told the jewel under the balance is a diamond.
lets have a look at the movement
the balance is a giant
just look at this picture, the balance compared to a balance we find in a wristwatch ( picture found via google)
a nice fusee chain mechanism
the balance is made in palladium
I'm not sure but I think they don't make these movements anymore
One a youtube video somebody said they stopped making these because it was too expensive to keer servicing all the necessary tools to make these movements AND the only watchmaker who made this movement was about to go in retirement. So they might have a few in stock but if this info is correct, production already stopped some time ago
So from now on I will admire it when sitting in the seat in the living room
just a last picture, it gives you an impression of the size ( 39,5mm watch next to it)
I contacted Girard Perregaux to get more info ( How long did they make these, how many were made, and all useful extra info)
But unfortunately they did not answer yet
If they give me extra information, I will share it here