This is a great picture of an outstanding movement, but ...
By: small-luxury-world : June 14th, 2014-05:07
the background shows something different. Yes, I know in the book it is called Datograph which is not correct. Just look on the caliber signature, it shows L 951.0 instead of L951.1.
In fact it is this one ...
the 1815 Chronograph, which was introduced in 2004. Still it was in the planning before the Datograph