Vacheron Constantin

Hi all, I have recently purchased a Vacheron Constantin watch from the 1940s and am wondering if anyone can give me more information with regards to the reference number and movement. I believe it is a Cal 453 movement but it does not have any markings th...  

I wonder if it’s reference 4217. Am no expert either so could be way off base.

Maybe, it seems 4217 are all center seconds thought.

The reference is 4073. Same style as case maker - Gerlach - as the 4217 but with subsidiary seconds instead of center seconds. You are correct in that the caliber is a 453 but it is unmarked as this is early in its run if I am not mistaken. Your watch dat... 

I see, I saw a few other examples of the cal 453 with many more markings on it so I thought this might be different.

We can compare these catalog images but I like your suggestion of the 4073, nice find! ...  

without the later swan-neck fine regulator or shock protection, 12 1/2 lignes, circa 1940 as you already know. Those lugs were shared with several V&C models but the flat bezel makes me think of Ref 4300 which was in production into the 1950s. A hands... 

It is a lovely example indeed.