factory Blank Movements Excelsior park Landeron Lemania Seagull Valjoux Venus These companies made movements for others to make into watches.

manufacture Proprietary Angelus Audemars Breitling Bulova Bvlgari Cartier Chopard Chronomatic Buren and Duipuis Depraz Fc Glasshutte Gp Hublot Iwc Jlc Lange Longines Minerva Movado Omega Panerai Parmagiani Patek Piaget Pierce Rolex Seiko Tag Un Universal Vacheron Zenith These are movements made by watch companies.