1925- Waltham Watch Company (WWC).
http://en.wikipedia.org/wiki/Waltham_Watch_Company produced two high-quality groups of watches as direct result of orders placed by the Canadian Pacific Railway. One group has the shield and beaver emblem of the Railway engraved on the movements, known as the "CPR". The second group has "Canadian Railway Time Service" engraved on the movements, is known as the "CRTS" type. They are both highly prized by collectors.
In U.S.A., the manufacturing of Waltham watches and watch parts ended in 1957. Production was transferred to Switzerland, to Waltham International SA, a company established in 1954 by the US parent company. However, specialized clocks and chronographs for use in aircraft control panels continued to be made in the Waltham factory under the name of Waltham Precision Instruments Company until the company was sold in 1994.
Waltham International SA
The Waltham Watch Company went out of business in 1957, but founded a subsidiary in Switzerland in 1954, Waltham International SA. Waltham International SA continues to produce mechanical wrist watches and mechanical pocket watches under the "Waltham" brand and is a full-fledged member of the Federation of the Swiss Watch Industry FH.