Audemars Piguet Grand Complication, Piece Unique No. 1/1 in 18ct white gold with diamonds. Produced as a unique piece in 1994 this extraordinary timepiece is a large minute-repeating, water-resistant, self-winding, wristwatch with co-axial round button split-seconds chorongraph, register, perpetual calendar with indication of the weeks, moon phases, and an integrated 18ct white gold and full diamond-set Audemars Piguet link bracelet. It is accompanied by an Audemars Piguet certificate of origin. Estimate GBP400,000 to GBP667,000.
GfK data shows highest growth for leather strap watches.
Consumer watch exhibition confirms dates and exhibitors for 2013.