The Group's specialist watchmakers represent a proud tradition of style, quality and craftsmanship. Jaeger-LeCoultre, IWC and A. Lange & Söhne, which were acquired in 2000, have perfectly complemented Piaget, Vacheron Constantin, Officine Panerai and Baume & Mercier in this respect. Almost all of the Maisons were established during the 19th century. The exception to this is Vacheron Constantin, the world's oldest watch manufacturer, which has operated continuously since 1755.