A cal. 351 2652?

Posts
880
Likes
1,677
Hello all!

The watch presented in the pictures below is composed of:
  • a 18K gold case corresponding to ref. 2652 and manufactured by Antoine Gerlach SA;
  • a cal. 351 bumper serial 13XXXXXX dating from around 1952 and bearing the inscription 'ADJUSTED FIVE POSITIONS AND TEMPERATURES' on its rotor.

Here are the pictures:



https://i.ibb.co/VW5qGBwS/received-9815442281826498.jpg[IMG]

This is not a watch I intend to buy, I'm just nerding over this. What do we have here? An experienced collector is 100% sure this is a franken, and I'm more in a grey-ish area. Desmond's database does not even mention this calibre in any existing Constellation configuration, which would incite us to draw the conclusion that no Constellation bore that movement. But I'm curious, so I consult the Oracles.

So, my friends, nerd with me and give me the opportunity to learn something new here, I'm sure someone will put his finger on so
mething.

Thank you!

 
Posts
7,762
Likes
35,347
351 was not a chronometer so I guess either there is a 351 in there with a chronometer rotor or there's a 354 in there with a 351 bridge. Looking at the different colours of the movement parts I wouldn't like to guess....and to be honest I'm not smart enough to differentiate the differences in the movement parts to make the call one way or the other.
 
Posts
12,841
Likes
22,166
Given the presence of both a swan neck regulator and a mis match of colours between different bridges in the movement, I’d sway towards that being a 354 with some franken parts from a 351
 
Posts
4
Likes
0
This is not a watch I intend to buy, I'm just nerding over this.
There might be a chance this watch is still there waiting for the buyer. Where can I find it/see it?
 
Posts
5
Likes
1
Bonjour, j'ai une constellation en or 18 carats
modèle 2648 de 1952. Avec un mouvement 351 pare-chocs
 
Posts
5
Likes
1
Bonjour, j'ai une constellation en or 18 carats
modèle 2648 de 1952. Avec un mouvement 351 pare-chocs