The Ref 6087 is one of Vacheron Constantin's rarest and interesting chronographs made in extremely low numbers in the 1950s. The first VC chronograph with screwed caseback it was the inspiration for the highly acclaimed Historiques Cornes de Vache launched in Sept 2015.
Ref 6087 from the 50s
photo courtesy of Hodinkee/Phillips
However, 2 platinum watches with the same reference number but with no visible similarities were made in the 1990s and I finally got the story behind this from the horse's mouth.
In the 1990s a collector owning a 6087 with a case in horrendous shape took the watch back to VC to see what could be done about it, the discussions wayed off path and it was decided to create a new case in platinum, with a new design and a new dial using the original vintage movement. The result is the watch below, a ref 6087 with modern clothes and a vintage heart.
However, VC made two of these and I do not know the reason behind the second one
photo courtesy of Antiquorum