Patek Philippe Complications 5235/50R-001 40.5 mm

5235/50R-001 puts the annual calendar on a regulator dial, which is a different Complications idea from a standard three-register calendar. It has been in the catalogue since 2019: rose gold, 40.5 mm, automatic Calibre 31-260 REG QA. The two-tone graphite and ebony-black vertical satin face, with white transferred markers and white-varnished white-gold baton hands, is built to be read as a regulator first. A matte black strap and rose-gold prong buckle leave that graphic alone.

The rose-gold neighbours to refuse are 5205R-011, whose annual calendar is conventional on an olive-green dial, and 5224R-001, which is Travel Time at 42 mm. Several Saudi-shipping offers are listed; use them to confirm the regulator layout and the graphite-and-ebony dial, not merely a rose-gold Patek calendar. Check 5235/50R-001 including the slash in the reference, the 40.5 mm case, and the see-through back. A listing that photographs like 5205R-011 is the usual mix-up.