Other information about the Grand Oeuvre has been trickling out as well – for instance, we know that the watch will feature a rather spectacular triple axis tourbillon which has, among other things, a spherical balance spring (as seen in the Gyrotourbillon 3, by the way) and a pretty wild looking 3D Maltese-cross shaped inner cage. Over at WatchTime, Editor-in-Chief Joe Thompson has pulled back the curtain on an absolutely wild double perpetual calendar that simultaneously shows the Gregorian date, as well as (get this) the date according to the ISO 8601 business calendar, which despite our general aversion to calling anything “first” in watchmaking is, we’re pretty darned sure, the first time that’s ever been done. And, based on some teaser images over at Vacheron’s in-house discussion forum, The Hour Lounge, it looks like this is going to be a pocket watch – a pocket watch intended to put, say, the Packard and Graves Supercomplications in the shade, to say nothing of the Vacheron Constantin Grand Complication made for James Ward Packard, which sold at Christie’s back in 2011 for $1.8 million, as we reported here.

Now, the stick that is really going to stir all the enthusiast anthills is deciding whether or not this is, in fact, the most complicated watch ever made, when it’s finally revealed on September 17th. Here’s the thing: there is not actually a universally agreed-on way to count complications. Should you count the perpetual calendar as a single complication? Should you count it (as VC Hour Lounge moderator Alex Ghotbi asserts in this post – where he also reveals additional functions) as five (day, date, month, leap year, plus the perpetual calendar itself?) There are some sticklers for horological tradition who refuse to count the tourbillon as a complication, strange as that may sound – the rationale here is that a tourbillon does not provide any information but is merely (merely, ha) a “regulating mechanism.” When Vacheron Constantin released its last ultra-complicated wristwatch – the Tour de L’Ile, which Vacheron claimed as the most complicated wristwatch in the world when it was released for the firm’s 250th anniversary 10 years ago – the firm counted 16 complications. But the sometimes vehement disagreement amongst serious enthusiasts went on for months

No matter how you decide to count, though, this is certainly going to be a complicated behemoth of a timepiece, and if you really want to crack your brain trying to figure out at least some of what’s in store, you can take a look at the gnomic movement schematic on Vacheron’s website and try to figure out what you can. One thing’s for sure though – this is going to be a watch that breaks records and breaks the bank at the same time.