Tourbillon Double Spiral, Besançon Certified, White Gold 17000 Under loupe

Under loupe

Inside lies calibre 240 HU LU

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

Fewer than 50 examples of the 151

18038 Day-Date with a spectacular Onyx dial

Tourbillon Double Spiral, Besançon Certified, White Gold 17000 Under loupeA 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