The Grand Prix d’Horlogerie de Genève, the Caliber 1005 and the Name on the Bridge

In 2001 Vacheron Constantin won the Grand Prix d’Horlogerie de Genève  for their Laday Kalla watch. It runs on a caliber 1005 and is displayed on the Vacheron Constantin site:

The Grand Prix d’Horlogerie de Genève, the Caliber 1005 and 2001

If you look carefully, you will see that even today, the name on the main bridge is Vacheron & Constantin. Does this mean that the caliber 1005 was created before the name change to Vacheron Constantin (without the '&') in the early 70s and the caliber is still in use from an earlier manufacture?

Earlier this month I found what I thought was a certain fake because the watch face showed "Vacheron Constantin" and the movement showed "Vacheron & Constantin"; however, there's a current movement with 'Vacheron & Constantin' on a legitimate prize-winning watch. Another mystery for Sherlock Ghotbi!

cal 1005 is the oldest VC calibre still in continuous use
04/28/2016 - 13:30

So it is not surprising that movements have the "&".  Cal. 1005 is not used in high volume, so the bridges may have been made a long time ago (or they still use old tooling for the engraved text).

This movement goes back to at least 1967 (I have a catalog from that year), but do not know when it was first used.

Thanks Dan
04/28/2016 - 15:44

Very interesting. Is it VC based?

Thanks 

I'm not sure who designed it, or which ebauche it is based on
04/28/2016 - 17:21

But I believe Tick-Talk mentioned it came from JLC in a previous post to you (the funny one with the Neanderthal picture)  wink

Re: cal 1005 is the oldest VC calibre still in continuous use
04/29/2016 - 01:24

Hi Dan,

Just out of curiosity I looked at the movements of a few of my VC's

The "&" is on the rotor of my Mercator which as you know is from the 1990's.

And the movement is the Cal.1120, still used.

It' not on the Salterello which uses a highly engraved rotor. The Vacheron Constantin is on the inside of the bezel No "&".

Joseph

Thanks for the additional info/insight
04/29/2016 - 03:14

I think what you've discovered demonstrates the idiosyncracies and inconsistencies that occur with the details.  

I don't think it is all planned/managed in the overall scheme of things, and that it is due to the circumstances of the time (stock, tooling, case by case decisions, etc.). It goes back to nothing is absolute ;-)