Here is Vacheron Constantin’s unique creation for Only Watch 2015: the Métiers d’Art Mécaniques Ajourées timepiece, featuring a painstakingly hand engraved and skeleton caliber 4400 set in a 40mm white gold case, and a red outer enamel ring. The red is an extremely difficult color to obtain in enamel, and in this case is also symbolic of the the Principality of Monaco where the Monaco Association against Muscular Dystrophy research center (the recipient of the Only Watch auction proceeds) is based. As noted earlier this week, the the Only Watch charity auction is held every 2 years, and for 2015 there are about 40 watch brands that will be offering unique pieces at the Geneva auction & event this November. Vacheron has put forth an admirable piece for the event. A closer look, below.