Andy, according to Kathy Pritchard's excellent 'Swiss Timepiece Makers 1775-1975', Roamer was started by Fritz Meyer in Solothurn in 1888. By 1905 his company had made a half million watches. By 1905 the company was called Meyer & Studeli. I'm not exactly sure when they began using the Roamer name, but certainly they were using it by 1927. Another name associated with the company is Medana. They made waterproof and calendar watches, among others. Roamer Watches England imported a 21 jewel automatic called the Rotopower in the 1950's. More recent models were the Calculus and the Rockshell. Hope that helps.