Most sources seem to attribute
link the first
link black watch case to the Porsche Design Chronograph 1 from the mind
link of the legendary Ferdinand Porsche. However Jeff Stein of OnTheDash seems to disagree with the crowd as he wrote in his 2021 Hodinkee article on the Heuer Black-Coated Monaco. Before the iconic 1972 introduction of the Chronograph 1 Enicar seemed to have beaten the brand by a few years when they introduced the Enicar Sherpa OPS in the late sixties.