Heuer Carrera 12 Chronograph

About this reference

The Heuer Carrera reference 2447NT was produced between approximately 1963 and 1970. This specific execution is distinguished by its three-register "Noir Tachymeter" configuration, featuring a matte black dial with a white outer tachymeter scale. Collectors prioritize this reference for its 36mm stainless steel case with sharp, faceted lugs and the manual-wind Valjoux 72 movement, a column-wheel caliber noted for its reliability and historical significance. The 2447NT is rarer than the standard silver-dial 2447S or black-dial 2447N due to the added functional scale. On the secondary market, prices typically range from $15,000 to $30,000 depending on the presence of original tritium lume and case sharpness. A notable production detail is the transition from "Swiss" only to "T Swiss" markings on the dial, which indicates the shift from radium to tritium luminous material during the mid-1960s.