IWC. A Fine Limited Edition Platinum Automatic Perpetual Calendar Wristwatch with Moon Phases and 7-Day Power ReserveSigned IWC, Schaffhausen, Portuguese Perpetual Calendar Model, Ref. 5023, No. 015/250, Movement No. 3'228'815, Case No. 3'594'020, Circa 2011Cal. 5168 automatic movement, 62 jewels, silvered matte dial, applied Arabic numerals, outer railway minute divisions with applied short baton hour markers, four engine-turned subsidiary dials for day of the week combined with constant seconds, month, date combined with 7-day power reserve, and phases of the moon, eccentric four digit year aperture between 7 and 8 o'clock, large circular case, raised bezel, the band engraved 015/250, downturned lugs, sapphire crystal display back secured by six screws, platinum IWC deployant clasp, case, dial, and movement signed44.5mm diam.