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http://www.cafemanager.com/download.htm

If you’re the sort of person who worries about someone having the same outfit at a ball, link here’s a white summer watch just for you. In fact, it’s only for you because it’s literally one of a kind. This link IWC ref. 3705 “Fliegerchronograph” in white ceramic is a one-off prototype, from 1992, that HODINKEE’s James Stacey spied at the 2019 SIHH. Something this rare isn’t just a link flex at the pool; it’s a major flex at any gathering of hardcore watch nerds as well. —Jack Forster

This is in tandem link with news of a new reference the link 41mm Nautilus 5811 also with a blue dial. But that one's in white gold. In all there's really not a whole link lot of difference between the outgoing steel 5990 and the incoming model aside from the dial color which Patek describes as having a "radiant sunburst finish and a subtle black gradation to the periphery."