This model is a version from 1972, it is a particularly beautiful version in near perfect condition with a high-contrast look. The Heuer Carrera Chronograph Ref. 1553N with automatic winding movement Cal. Heuer / Buren 15 has a blue dial with a white-grey register, permanent second at 10 o’clock and a date indicator at 6 o’clock. The case is signed 1153. For the first Cal.15 versions the already produced Carrera automatic case were used, later were cases signed specially for this version 1553. The central second hand is in orange, the tachymeter imprint in black on white. The case is in unpolished authentic condition. Excellent condition of the dial and hands.