This rare and sportive model of the automatic winding Carrera Cal.15 ref. 1553 is dating from 1972 .The watch is in NOS (New Old Stock) condition. Dial and hands are still perfect. White tachymeter scale with black numerics. Dark blue dial with permanent second hand at 10 o´clock (speciality of cal. 15). Black leatherstrap with original Heuer buckle.