IWC Schaffhausen Big Pilot's Watch Perpetual Calendar Spitfire

The IWC Big Pilot's Watch Perpetual Calendar Spitfire, reference IW503601, has a 46.2 mm bronze case. A limited edition of 250 pieces, the watch has a perpetual calendar with a day and date display, month, four-digit year and moon phases for the northern and southern hemispheres. The case measures 15.4 mm thick and has a screw-down crown. Self-winding calibre 52615 has a 168-hour power reserve, Pellaton winding and 54 jewels. Convex sapphire glass has antireflective coating on both sides. A brown calf leather strap is fitted to the watch. The case has a see-through back and a water-resistance rating of 60 metres. The green dial has small hacking seconds and a power reserve indicator.