I like your last question - is the Millenary the proper context for a calendar watch. For this one, maybe so, as again the leap year calendar is a bit different. Still, it is a curious selection. These complicated Millenaries have a somewhat chaotic layout, which is why they are so delightful to me. To place the calendar cutout windows at 12:00 and 6:00 (kudos though for correctly being sized differently) does not seem so consistent with the rest of the design. It does however make me think of the Cabinet # 5 Millenary piece, and that is a good thought 