This is a pre-owned IWC Portugieser Annual Calendar watch. The reference IW503510 is a limited edition watch and this is one of the only 150 examples made. It is a 44.2mm stainless steel case watch that is powered by a self-winding movement. The striking green dial helps the watch look apart and it comes with a black alligator leather strap. Purchased in 2019, this timepiece comes in its original box.
The IWC Portugieser Annual Calendar has various functions, including hours, minutes, small seconds, day, date, month annual calendar and even a power reserve indicator. The watch has a water resistance rating of 30m and it has a power reserve of up to 7 days.