Heuer Bund Chronograph 3H dial ref 1550 SGFounded in 1860 by Edouard Heuer in St Imier, Switzerland, Heuer revolutionized horology through precision timing and motorsports. The brand patented the iconic oscillating pinion in 1887 and introduced one of the first automatic chronograph movements in 1969. Under the leadership of Jack Heuer, the brand solidified its legendary connection to auto racing. It introduced iconic models such as the Carrera (1963) and the Monaco (1969), the latter