The amusing thing here is that the diamond lugs and diamond bezel only adds $2000 USD to the standard version's price. I disagree about the "beautiful layout of the perpetual calendar" as I have always disliked the the month/leap year indication on this watch. Having 48 hashmarks on a tiny sub-dial was never a good idea in my eyes. Then again, this probably isn't a major problem for most people since most people know what month they're in. But it shows that other brands do a better job - other brands have a 1/2/3/L sub-dial and a month sub-dial (usually all on the same sub-dial with two hand indications) with only 12 hash-markings - thus promoting better legibility.