This is a pristine, looks to be unworn, Patek Philippe World Time Reference 5110J from 2006. World Time watches combine a 24 hour ring with a rotating chapter ring of reference cities. Each reference city represents one of the 24 principal time zones on earth. This beauty is powered by a 240 caliber movement with 22 karat micro roto. This watch looks to be unpolished and unworn. The yellow gold has patina which is usually a sign the gold has not seen a polishing machine. This minty watch comes with its original booklets and papers from Patek Philippe.