WatchProSite|Market|Digest
WatchProSite|Market|Digest

Horological Meandering

StopSecond

 

A very nice watch and rare in the larger size case.

As has already been said this is a Longines 12.68z movement onto which they added a chronograph module which creates a constant running chronograph with a flyback function, designed around 1938. You get them with an hour counter chronograph - like this one -  and also with just the constant running seconds. Some of them have a hacking function where if you slightly depress the pusher the chronograph will stop and then a full push will cause it to flyback. Longines called it the StopSecond.

We have discussed them before and here are a couple of links to previous posts, including a one in which I show a black dial version of the watch your friend has acquired.

home.watchprosite.com

home.watchprosite.com

They were produced in the small cases for the US market mostly and also appeared in the jumbo case you see in the post which is a full 47mm. Not sure how long they kept producing it for, but at least fifteen to twenty years.


  login to reply
22 Comments view entire thread 

An unusual vintage Longines monopusher

 
By: nilomis : September 24th, 2014-13:22
Team, Here is a watch that I never saw another and this, as is my standard procedure, raises some concerns. First of all, let me describe how it works: The pusher at 2 starts and stops the chronograph but when it stops, it continues to work, like the Chro...  

Great! Can you ...

 
By: nilomis : September 24th, 2014-13:41
Nicolas, Explain more about if this movement is suppose to work as I described? And the case? What is wrong? Thanks, Nilo

Yes, you got it righ, this is a Chronostop. The second hand keeps running.

 
By: amanico : September 24th, 2014-13:51
I am not sure about the case because I saw several with simpler lugs. But I am not an expert, and didn't see all the variations on this movement, which was born a the end of the 20ies, early 30ies, if I remember correctly. It is a 27 mm big movement, beat... 

Living and learning....

 
By: nilomis : September 24th, 2014-13:55
if someone ask me last week my answer was "Omega invented the Chronostop". Lots to learn. Thank you my friend, Nilo

GP Mimolympic was the first

 
By: Goldenlutin : September 26th, 2014-05:20
Hi Nicolas, The first wristwatch of this kind (montre strop) was the GP Mimolypic in 1936. After that you have dozen of such watches. The Omega came much later. Regarding the Lemania you mentioned, it is a different thing. It resets the second hand and fu... 

Always a pleasure to have such informations from you, GL.

 
By: amanico : September 26th, 2014-05:33
Do you have any picture of the Mimolympic,to share? Not that I want my wish list to be longer, but... ;) Best, Nicolas

Nice!

 
By: patrick_y : September 24th, 2014-19:36
I like the vintage military look. Nice piece! The fact that it's a chronograph makes it really special because it has a nice clean look. The fact that it's a monopusher is icing on the top of the cake.

Case is right

 
By: RDL : September 25th, 2014-05:39
This model came in different sizes (have seen from 32/33 to 36/37mm - most are small), and different forms (round pusher also). I myself had this 12.68z model with exactly the same lugs, and the watch was confirmed by Longines. So, the case should be all ... 

Great news to a dear friend ...

 
By: nilomis : September 25th, 2014-06:11
After I posted here I was informed that a dear friend acquired this Longines and it will be great news that his watch is correct. Thank you very much, Nilo

StopSecond

 
By: Ubik : September 25th, 2014-09:19
A very nice watch and rare in the larger size case. As has already been said this is a Longines 12.68z movement onto which they added a chronograph module which creates a constant running chronograph with a flyback function, designed around 1938. You get ... 

Thank you very much ...

 
By: nilomis : September 25th, 2014-10:11
Ubik, Perfect. My friend will be very happy with your information. Cheers, Nilo

Longines 12.68z stop

 
By: gring : September 26th, 2014-05:04
Hi, long time lurker on this forum and fan of these 12.68z stop seconds. This is a lovely example of the center minute (red hand, replacement perhaps) variety, mid 1940's I'm guessing. Here are my two: A 33mm early 1938 UK possible military and a 38mm 194...  

greetings....

 
By: gring : September 26th, 2014-12:24
appreciate the welcome, Nicolas; Ive followed your JLC posts with great interest and will summon the courage to add my military examples to one of the (your) next posts.

My 1951 Chronostop

 
By: JeSuisJLC : June 27th, 2015-12:49
A little info would be appreciated. Is this worth sending to the factory for cleaning? ...  

little stop second

 
By: gring : August 23rd, 2015-07:56
It\'s a lovely watch worth servicing, (but sending to Longines will be very expensive) though its quite small -31mm, I believe- and getting parts for the 12.68z chrono difficult without buying a donor watch.