In 1957, Piaget introduced an ultra-thin hand-wound movement, the 2 mm thick Calibre 9P, which made it possible the creation of an ultra-thin watch which redefined the codes of elegance and greatly influenced the entire watchmaking industry.
Three years later, in 1960, Piaget followed the success of the 9P with the Calibre 12P, an ultra-thin self-winding movement measuring just 2.3 mm – an exceptional result that was possible thanks to the use of a 24k gold off-centred micro-rotor.











