The difference of Vacheron Constantin Overseas Generation 1 Ref 42042 and 42040

 On and off we can see there is Overseas ref 42042 and 42040 which state also same 37mm diameter.

So what is the difference between this models? We can refer to the attached table. More ever 

according to the official reply to one of their watch fan, telling that Ref 42042 has a stronger and thickness movement which is more suitable as the movement on a sport watch.

As for dial, the early one is sigma, then T Swiss T, and the replacement dial Swiss made.

So the price of Ref 42042 and 42040 has a big price difference of about 30%.

How to tell your watch is Ref 42042? You can check the bracelet is engraved with "423J" that should be 42042.

How about Ref 42050, that is having a 35mm diameter Overseas. So the price is even lower.

HK Snob