Historiques Ultra-Fine 1955 Platinum
|Diameter: ||36.00 mm|
|Height: ||4.13 mm|
|W/R: ||30.00 m|
|Indexes: ||Stick / Dot|
Basic (hour-minute) handwound movement with 18 jewels and a total of 117 parts. Hallmark of Geneva certified.
Work on its development began in 1952 in L’Ile (the building on the Rhone River ‘island’ that has housed Vacheron Constantin’s historical premises since 1875) and it was presented for the brand bicentenary celebrations in 1955 under the name Calibre 1003.
Its 9-lignes or 21.05 mm diameter and 1.64 mm thickness have made it the world’s smallest mechanical manual-winding movement on the market. By way of comparison, this micromechanical masterpiece composed of 120 parts is about the size of a small Swiss 20-centime coin.
This now legendary calibre (of which the excellence was to be confirmed by the subsequent orders placed by other great names in fine watchmaking) was used to equip three round watches that set a new record as the world’s thinnest watches measuring just 4.54 mm thick
At the time of its launch in 2010, the “Historique Ultra-fine 1955” was the world’s thinnest mechanical hand-wound watch - measuring just 4.10 mm thick. It is equipped with the mechanical hand-wound 1003 movement. The movement is one the thinnest in the world at just 1.64 mm thick, rebuilt - for its 55th anniversary in 2010 - in 18-carat gold, and bearing the Hallmark of Geneva. The present reference 33155/000P-B169 was introduced in 2016 and features a platinum case.