Royce Leadership 600 Day Date 57 Jewels – Automatic

Kocher, Sylvan & Cie SA + Eska MFG Co, Grenchen / Selzach, Switzland & Baltimore MD, U.S.A.
Other Brand & Model names: Amphibian, Bonostar, Budy, Cedin, Dorna, Dower, Eska, Leadership, Megalo, Protex, ROYCE.

The company was founded in 1922 in Selzach. It was listed at Selzach in 1924 with no Eska. Eska was imported in the 1920s by Walter Kocher, NY. Royce was listed as a US import in 1951, using movements by A. Schild and ETA. Claimed in 1953 in an ad that they had launched “the first self-winding watch more than 20 years ago”. In 1966 the company was
listed as S. Kocher & Co, Eska. An ad in The Swis Watch 1972/73 showed two coin watches, one using a US $ 10 and one using a US $20 piece, saying “Eska, Royce for 50 years”.