The Monaco Piece d’Art was reworked by TAG Heuer’s in-house experts in the Vintage After-Sales department. Selected from the TAG Heuer Museum at the brand’s headquarters in La Chaux-de-Fonds, Switzerland, the timepiece features the original Calibre 11 – the first automatic-winding chronograph movement, launched in the Monaco in 1969 – and the original steel bracelet. The most outstanding aspect of this unique timepiece is the decorated movement, now visible through the transparent caseback. Initially, the caseback was closed, but the highly skilled watchmakers at TAG Heuer cut out a circle of the stainless steel and replaced it with sapphire crystal. This enhancement provides an unobstructed view of the decorated movement within.
The watchmakers disassembled the movement and components and worked on every part of the chronograph module. This included bevelling all the components and enhancing the parts with straight graining, mirror polishing functional surfaces and screw heads, and adding three new jewels to bring the total to 20 rubies. The most impressive artistry is visible on the bridges; engraved by hand, in a font reminiscent of the style of the 1970s, the words “Cal. eleven” feature on the chronograph bridge for the minute and seconds counter, with “Monaco” appearing on the hour counter bridge. The two bridges had to be remade, as the originals were too thin for the elaborate engraving work. The date disc was also replaced, with the numerals now in red instead of black.