The early Breitling Duograph were made in very small numbers starting in approximately 1943 and were available in gold and in steel. Coming in at a relatively large case for the time (36 mm) split-second chronographs were always top of the line and are rare. This early example with a low serial number is part of the first series of Duograph and features a very beautiful two-tone silver dial with blue tachometer and telemeter scales.