Photovoltaic cells were invented in the 1940s, and Patek Philippe produced a novel clock that used them. Once integrated circuit technology improved enough to build a quartz watch, American inventor Roger Riehl created the first solar-powered watch. His Synchronar paved the way for the solar digital watches that brought the technology to the masses in the 1970s. Then there was Uranus, with their wild calculator watch!
1972 Rolex Double Red Sea Dweller (DRSD) Mark II
It’s rare to find a watch that is universally desirable and pricey yet still common. Such is the case with the Rolex “Double Red” Sea Dweller, a proper tool watch, investment, and status symbol. Even more unusual, this watch comes from the 1970’s, the era of the collapse of the Swiss watch industry and many truly horrible designs. Yet it is so iconic, so sought-after, and so recognizable that prices continue to vault upwards!
1972 Audemars Piguet Royal Oak “A Series”
Not everyone likes the Royal Oak, but it’s hard to understate its importance. It’s one of the most influential watches of the last half-century, creating a whole new niche that now accounts for much of the industry’s sales: Luxury sports.