IWC Schaffhausen Portugieser Perpetual Calendar Edition "150 Years"

The IWC Portugieser Perpetual Calendar Edition "150 Years", reference IW503405, has a 44.2 mm case in 18-carat 5N gold. This special edition has a perpetual calendar; the case measures 14.9 mm thick. Self-winding calibre 52615 has a 168-hour power reserve and 54 jewels. The white dial has a day and date display, small hacking seconds, a power reserve indicator and a moon phase display under arched-edge sapphire glass. A black alligator leather strap by Santoni is on the watch. The case carries a water-resistance rating of 30 metres. The movement is decorated with Côtes de Genève and perlage.