IWC Schaffhausen’s Portugieser collection represents one of the brand’s most celebrated lineages, originating in the 1930s when Portuguese merchants requested wristwatches with marine chronometer precision. The Portugieser Chronograph maintains this legacy through its clean, highly legible dial and precision timing functions. This reference IW371445 features the collection’s iconic 40.9mm stainless steel case with its characteristically slim bezel that maximizes the dial opening. The silver-plated dial displays the signature Arabic numerals and feuille-style hands, both finished in black for optimal contrast. The subdials at 12 and 6 o’clock maintain the balanced layout that has defined this model since its introduction, while the blued steel chronograph hands provide functional distinction against the silver background. The watch is fitted with a black crocodile leather strap featuring IWC’s standard deployant clasp.
Inside this chronograph operates the IWC-manufactured 69355 calibre, a self-winding movement with column wheel control and a classic 30-minute and running seconds chronograph configuration. The movement operates at 28,800 vibrations per hour and delivers 46 hours of power reserve when fully wound. Through the sapphire caseback, collectors can observe the Côtes de Genève decoration and perlage finishing on the movement components. The chronograph function is activated via screw-down pushers that provide water resistance to 30 meters, making the watch suitable for daily wear while maintaining its dress watch proportions. The movement’s construction follows IWC’s engineering principles with efficient energy transmission and reliable performance that has been proven across their chronograph collections.
This particular example is in mint condition with no visible signs of wear on the case, crystal, or strap. The watch comes complete with its original IWC warranty card and documentation, confirming its authenticity and providing service history verification. Within the current market, the Portugieser Chronograph maintains strong collector interest due to its recognizable design and versatile 40.9mm case size that appeals to both modern and traditional tastes. The steel case with silver dial configuration represents one of the most sought-after combinations within the collection, offering strong value retention and consistent demand across primary and secondary markets. The presence of complete documentation further enhances its long-term investment potential for serious collectors.

