Even though watches were produced with serial numbers up through about 850,000 it is believed that the total production of watches from the U.S. It was through this acquisition that Keystone gained control of the factory, wherein they began production of their Keystone-Howard watches in 1905. Watch Company was purchased by the Philadelphia Watch Case Company in 1901, which subsequently merged with the Keystone Watch Case Company in 1904. The top grade watch produced by the company was "The President," an 18-size, double-roller watch which an 1894 advertisement claimed was accurate to within 6 seconds a month! The Dome Watch movement required a special case, which proved unpopular, and in 1888 a new watch was produced which would fit into a standard American case. The Find Serial tab requests a serial number and displays the detailed information about that number on the same page. The pallet fork was made of aluminum alloy and used a square ruby impulse jewel. The serial number database features include the ability to find information and view the source pages for the information about Waltham watches and view observaton information provided by other collectors. These early watches are called "Dome Watches" because they used a wide mainspring barrel, the top of which was domed upward in the center to accommodate the balance wheel. The first watches produced were 16-size, 3/4 plate and were made in 3 grades. The directors of the new company wanted to name the company the Waltham Watch Company, but a suit was filed by the American Waltham Watch Company and the use of the Waltham name was prohibited in 1899. movementĪ new factory was constructed, with a planned production of 50 watches per day. An example of a late production US Watch Co.
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