and for the 2599 Chrono, there are so many very nice options in other metals and other dials.
BTW: the set shows nicely the size difference, as the Chrono is a tad smaller than the King Size.
2599: 31 x 30 mm
King Size: 32 x 32 mm
This may sound small, but in my opinion makes a big difference and the Chrono is a bit less wide and better proportioned, so I think it's the perfect size for a Vintage 45.