This is a 1970s manual version of the Heuer Monaco with a square case, gray dial and three black sub-registers.
The Heuer Monaco became famous thanks to its "leading role" in the film Le Mans. Steve McQueen wore the classic automatic Monaco with a blue dial on his wrist. The Heuer Monaco offered here is powered by the Valjoux 7736 manual winding movement and is even rarer than the 1133 automatic version. The reference 73633 is known in three different versions: the blue Monaco with white sub-dials, the completely gray version and the gray-black version shown here.
The square shape of the case is the main symbol of the Heuer Monaco. It was designed by Ervin Piquerez and was the first waterproof square case ever made. The case back is stamped with the Heuer logo and "Tool No 033". The number 033 stands for the special tool that was required to open the case.
Overall, the watch is preserved in very good condition. The dial is free of scratches or other defects. The three black sub-dials provide a subtle contrast. The small running second is at 3 o'clock, a 30-minute counter at 9 o'clock and a 12-hour totalizer at 6 o'clock. Red accents can be found in the hour markers and hands. The tritium luminous material is original and intact in all elements. Except for the small flaw next to the winding crown (see pictures), the case is also very well preserved. The movement operates perfectly.
Overall, this Heuer Monaco 73633 is an extraordinary and rare vintage chronograph with an attractive appearance and reliable movement.
Serial number: 166xxx
Int.Exe.: 60710