Portugieser Annual Calendar

The IWC Portugieser Annual Calendar brings together the classic elegance of the Portugieser line with a complication prized for its practicality. Introduced in 2015, this model showcases the annual calendar display at 12 o’clock, neatly presenting the month, date, and day—requiring adjustment just once a year. This was the first time IWC integrated such a function into the Portugieser, marking it as a milestone within the collection and a favorite among collectors seeking both utility and heritage in a dress watch.

Look for the reference 5035, which houses the in-house caliber 52850 automatic movement, offering a seven-day power reserve and a sapphire display back to admire the finishing. Cases are typically 44.2mm, available in stainless steel or various gold options, with subtle dial variations—blue, silver, and slate—affecting desirability. Limited editions and precious metal cases command higher prices, while early production runs may have minor dial font or color differences that appeal to completists.

Condition is paramount, as the polished case and domed sapphire crystal can show wear easily. Factory servicing history and completeness (box, papers, original strap and buckle) add value, especially for steel models where demand is strong. The annual calendar mechanism is reliable, but buyers should check for smooth date changes and ensure the power reserve indicator functions correctly—these details set apart a well-kept Portugieser Annual Calendar from a tired example.