Horological Meandering

Can anyone tell me more about this watch? Saw it in the Bonhams December auction catalogue....  

Here is my post: Some days ago, I posted information on the upcoming Rotonde de Cartier à grande complication , part of the haute de gamme Collection Privée Cartier Paris series. Also from the same collection comes the Tortue Monopoussoir (monopusher) chr...  

Another member of the Purists community, Geo, has a beautiful Tortue Chronograph in yellow gold. I'm sure he can give some great insight into the ownership experience of this watch. Although, I was not initially a fan of this case shape, seeing one in per... 

Thanks SJX for the thorough write up on this beautiful watch. The Bonhams auction watch has a white face with blue markings and is in white gold, which is different to your example - is there anything special about this? What is the Cartier Prive Collecti...