IWC Portugieser Yacht Club Boesch Edition Watch IWC Luxury Watches Swiss watches by wholesalewatches - May 28, 20160 IWC pays tribute to Swiss boatbuilder Boesch with a limited edition of its Portugieser Yacht Club Chronograph characterised by a mahogany-coloured dial and, on the inside of the glass back cover, a mahogany inlay made specially for the watch by Boesch itself. It is a special edition limited to 150