Ratskunk

Breguet fans are familiar with the Ambroise Tardieu engraving “ An evening with Princess Constance de Salm in 1806 ” (the engraving can be found in volume 2 of Complete Works of Madame Princess Consta

Common knowledge is Breguet's tourbillon was first presented at the EXPOSITION DE 1806 LES PRODUITS DE L'INDUSTRIE FRANÇAISE under Chapter 19 Machines de Precision Section 1.1 Garde-temps, Pendules, H