Patek Philippe launched its Twenty-4 collection in 1999 as a modern take on its Gondolo models. Epitomizing feminine elegance, it was aimed at young, modern, active women looking for a watch they could wear for any occasion or activity, day or night. Hence the name. Its Art Deco-inspired rectangular case is flanked on either side by a row of shimmering diamonds that really make it stand out from the crowd. Originally crafted in steel, this exceptional pre-owned reference 4910 has an 18k gold case and bracelet, Quartz movement and comes with its own presentation box. These watches continue to be a popular investment choice.