Gold-Filled, guaranteed for 10 years (may be Rolled Gold Plate in later years) Gold-Filled, guaranteed for 20 years (formerly of Bates & Bacon, whose trade mark can still be seen in the cut) Gold-Filled, guaranteed for 20 years (formerly of J. Gold-Filled, guaranteed for 20 or 25 years, as marked in the case (formerly of J. Almost as if to add insult to injury, the names used on the cases were Keystone and Crescent, not Philadelphia. Instead, Keystone (the real owner) purchased the rights to use the Howard name on watches and ran the company as the E. " but that didn't exactly happen, at least not under the Philadelphia name. to have a large output of high grade watches. The stated purpose in an article describing Philadelphia's purchase of the United States Watch Co., Waltham, Mass. But, it must be kept in mind that, by that point, Zurbrugg and Keystone were essentially the same company. That was at the same time, that the three companies, Zurbrugg, NY Standard and Philadelphia, opened a shared office on New York's Maiden Lane. at Waltham, only a little more than a year after NY Standard was purchased by Keystone and Zurbrugg. Zurbrugg Co." That letterhead can be seen in an open letter to the trade, published when Philadelphia bought Bates and Bacon in January 1901. This is indicated on Philadelphia's letterhead which included a small banner reading "Successors to T. when it was incorporated by Zurbrugg and others in 1899. was apparently absorbed by the Philadelphia Watch Case Co. Muhr's Sons) and thus gained the use of the trade marks for Crown and Lion cases. which, having moved to Riverside, NJ in 1898, purchased the case business from J. Watch.Īnd in fact, the history of the Philadelphia Watch Case Co. Jerry Treiman in a message board thread about a U.S. states that all of the capital stock of a newly organized Philadelphia Watch Case Co. the history provided in legal documents for the anti-trust case against Keystone. Number on inside of case back.A different report from above shows that: Number inside case back or between Case lugs at “12” position. Number is on outside of case back And Dial # at 6:00 Example 4-063546 or 2030-915660.Īlso Model is shown on older models Example No. Number on outside of case back Older models usually begin with “4”. Number inside of case back, embossed or stamped in black ink. This listing is a guide in obtaining the correct number. Different watch manufacturers place these numbers at different points on the case. To obtain watch parts correctly, it is important that Case numbers be used when ordering these parts.
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