Heuer Carrera Chronograph Cal. 12 Ref. 110.573 with Rare “Automatic” Box Buckle5 celestial map

celestial map

around the outer track

-Patek archive extract stating sale date of 1991

What sets this watch apart are the factory-set diamond hour markers on the dial

Das Zifferblatt aus dem Hause Stern trägt das aufgesetzte AP Logo auf 12 Uhr

Heuer Carrera Chronograph Cal. 12 Ref. 110.573 with Rare “Automatic” Box Buckle5 celestial mapIt is a well known story that in 1969, three automatic chronograph calibers were introduced: the Zenith "El Primero," Seiko's Caliber 6139, and, last but not least, the joint venture between Breitling, Heuer, Bren, and Hamilton, which produced the Caliber 11. These Caliber 11 movements were used in the Heuer Monaco, Carrera, and Autavia chronograph lines. Shortly after, these movements were improved to the Caliber 12, and that's exactly what we have