Girard Perregaux Vintage 45 Chronograph Ref 2599, Steel.
An old picture to share with you. A marvel, and one of these rare watches to have a rectangular chronograph movement, fully in house.
For those who fear that it is too small, here is the evidence it is not, on my 17 cm wrist.
And an old companion, as I will celebrate its 8th birthday in a few months!