IWC - a gentleman's Portuguese 7 Day wrist watch. Reference 5001 06, numbered 3201306. Signed automatic calibre 51010. Grey dial with silvered Arabic numeral hour markers, date aperture to six, power reserve indicator and subsidiary seconds dial to three and nine respectively. 18k white gold case with exhibition case back, fitted to an authentic brown alligator strap with an 18k white gold deployant clasp. 42mm. Box and papers.
The Portuguese family has been a mainstay of the IWC brand offering since its inception in 1939. The name comes from the request for wristwatches featuring high precision pocket watch movements, received from two Portuguese importers. The design has changed very little since those early days remaining clear, subtle and understated. The automatic 51011 calibre includes the famous and highly efficient Pellaton winding system in addition to the 168hr power reserve.