A little while ago, I made a thread on waterproof 13ZN references (https://omegaforums.net/threads/waterproof-longines-13zn-references.120287/). One reference that I did not include was 3870. This reference is relatively unusual in that it can be found with two different styles of chronograph pushers: rectangular or round. I have not seen a large number of examples with round pushers, but all seem to be from order 21'153, marked "LXW" on the balance cock, and invoiced to Longines-Wittnauer (USA) between 1941 and 1944. The case-backs of the examples with round pushers seem to be the same as those with rectangular pushers, neither have gaskets. Below are some examples for reference.

Source: Chrono24





Source: https://www.carsandwatches.com/watches/rare-longines-13zn-waterproof-with-black-dial

View attachment 1646555




Source: https://secondtimearoundwatchco.com...ister-chronograph-stainless-steel-watch-14239
Note: This example has a refinished dial.

 

Many thanks for sharing your research!

 

My pleasure!

 

Thanks for sharing! A rare reference indeed.

 

You're welcome! It is neat to see new examples come out of the woodwork.

 

Lxw on the cock, but what it is stand for?
How much for this reference?

 

The movements with the LXW marks are for the american market.

 

Thank you so much ,
Do you know L X W , the full name is? Just curious.

 

No, I don't.

 

LXW is the US import code for Longines

 

Here is the information I just got back from Longines about mine, which has the LXW on the movement as well. It has the same order number as the one pictured above:

"Originally, the serial number 6'072'xxx identifies a wrist-chronograph in stainless steel bearing the reference 3870 and the order number 21153. It is fitted with a Longines manual wound mechanical movement, caliber 13ZN. It was invoiced on 3 February 1944 to the Longines-Wittnauer Watch Co., INC., which was at that time our agent for the USA."

 

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Thanks for adding this information!

 

Beautiful 3870, good condition, do anyone know the price?

 

Around 11k

 

Good price? Is it reasonable price?

 

Very few ref. 3870 examples have sold publicly in the past 5 years so it is difficult to say.

 

thank you!

 

omg 3870 , sold over 30000 euro in Japan before...

 

Next time post the link as well…