Tourbillon Double Spiral, Besançon Certified, White Gold 17000 They are rumored to have

They are rumored to have been the inspiration for John Mayer’s recent collaboration with Audemars Piguet

40mm thin in the petite seconds at its lowest point

This is the only known example with a Tiffany dial and it is also the only known entirely gold dial

Under loupe

Tourbillon Double Spiral, Besançon Certified, White Gold 17000 They are rumored to haveA Tourbillon Double Spiral, the first model ever released from Laurent Ferrier in 2010. This is one of very few examples made in a 39mm white gold case, as opposed to the standard 41mm, also submitted for Besanon Certification at request of client. Calibre FBN 916. 01 uses dual Straumann Hairspring, with two spirals mounted directly out of phase to cancel positional errors. Its architecture is inspired by mid century Patek Philippe observatory