Compagnie des Montres Longines Francillon S.A., or simply Longines, is a Swiss deluxe watchmaker based in Saint-Imier, Switzerland. Started by Auguste Agassiz in 1832, the firm has actually been a subsidiary of the Swiss Swatch Group since 1983. Its winged shapely logo, which was registered in 1889, is the earliest unchanged yet still energetic signed up hallmark.