Issued in an exclusive five-piece limited edition, the “Oeuvre d’Or” collection pays tribute to its principal source of inspiration, the astronomical pocket watch No. 3 from Ferdinand Berthoud. Its main components are adorned with original decorations: while the dial is finely crafted to obtain an aged patina, the half bridges of the movement also highlight the know-how of the Manufacture’s engravers with their hand-made “pyramid” motif decoration.