sentences:  Prior to the sale to Citizen, Frederique Constant Holding SA owned Union Horlogère Holding B.V., which also owned Alpina Watches International SA, a watch "manufacture" founded in 1883 by Gottlieb Hauser, a watchmaker in Winterthur who founded the Swiss Watchmakers Corporation ("Union Horlogère Suisse").Additionally, Union Horlogère Holding B.V. also owned Ateliers deMonaco SA, a watch "manufacture" founded in 2008 (the same year as Frédérique Constant SA) by Peter Stas with two other partners.All three companies (Frédérique Constant SA, Alpina Watches International SA, and Ateliers deMonaco SA) are based in Plan-les-Ouates, Geneva, Switzerland.