I am considering purchasing a Vacheron Constantin Toledo 1952 (ref 47300), but I have a question about the movement. When the model was announced a couple of years ago, the movement was not made in house by VC but based on a JLC movement. I read somewhere that VC intends to make its own in house automatic movement, so I was wondering if the current Toledos use an in house movement or the JLC movement? Thanks.