The IWC Aquatimer Ref. 816 AD, a highly collectible beauty

IWC was not the first watchmaker to produce diving watches. Rolex patented the waterproof Oyster system in 1926 and later in the 1950s other important watch brands followed the trend that had begun with the Oyster system. The post World War II years saw an increase in economic activity with new business opportunities, new products, and new travel. These…