History, Serial Numbers & Production Dates. Brief History: Hamilton Watch Company. Including Hamilton Watch Serial Numbers and Production Dates. Lancaster, Pennsylvania. Hamilton factory: Using a precision scale to fit balance screws to a balance. Hamilton Watch Company: Early Days. In 1. 87. 4, General Grant was President of the United States and Conestoga wagons creaked along the Lancaster Turnpike, as citizens heeded the call of Horace Greely to . The Adams and Perry Watch Company went up right beside the turnpike. Its founders possessed a good combination of skills: Mr. Perry was a watch designer, and Mr. Adams was an organizer and promoter. They brought skilled watchmakers to Lancaster and began production in 1. Like so many infant industries, Adams and Perry did not have enough capital to market their product. Lancastrians came to their rescue in 1. Lancaster Watch Company. The Lancaster Watch Company continued to suffer growing pains and was reorganized again in 1. Keystone Standard Watch Company. Nevertheless, the financial problems persisted until 1. In that year, the Hamilton Watch Company came into existence as a result of yet another reorganization. The name, Hamilton, was selected to honor Andrew Hamilton, original owner of the Lancaster site on which the factory was situated. Hamilton was granted the land by William Penn's heirs and is credited with founding the city of Lancaster with his son James. Hamilton Watch was founded by merging Keystone with the Aurora (Illinois) Watch Company. Aurora machinery was moved to Lancaster in summer of 1. Among the leading business and professional men of Lancaster who founded the Hamilton Watch Company were J. Fondersmith, George M. Franklin, John Sener, John C. North, Martin Ringwalt, J. Frederick Sener, William Z. Sener, James Shand, Peter T. Cain of Springfield, Massachusetts represented the Aurora interests. Hamilton Railroad Watches. The Hamilton Watch Company was founded in 1. The rugged, precision watch that Hamilton produced became a favorite among railroad watch inspectors and personnel. In fulfilling the railroads' requirements for accuracy, it also filled the needs of the general public for a timepiece of high quality. By the turn of the century it came to be known as . Miller, vice- president, left Lancaster to become its general manager. The Hamilton- Sangamo Corporation was formed in 1. Hamilton Watch Company and the Sangamo Electric Company of Springfield, Illinois to market a new line of electric clocks. The Hamilton- Sangamo Corporation was sold in 1. General Time Instruments, Inc. Howard Watch Company were acquired by Hamilton in 1. Although never extremely active in the manufacture of . This trend caused a major shift in American watch production, with a new emphasis on producing wristwatch models for both men and women. During World War II, Hamilton ramped- up production of several models of chronometer to meet the US Armed Forces (particularly the US Navy's) need for an extremely accurate timepiece which could be used for navigation at sea. The first Hamilton chronometers were delivered to the Navy in February 1. Hamilton was making 5. Hamilton Model 2. Military Chronograph was widely used during WWII as a navigator's . The Elinvar hairspring was patented in 1. The name Elinvar was derived from the term . Powered by a tiny 1. The electric current necessary to operate one 1. The Hamilton Electrics featured not only a revolutionary movement design, but also were known for their avant garde styling, making them among the most collectible watches today. Also during the mid- fifties Hamilton embarked on a program of expansion and diversification. As a result, the company produced watches under three brand names – Hamilton, Vantage and Buren – in six plants in this country and abroad, manufactured sterling and plated silverware, fabricated and processed rare and exotic metals, and produced mechanical and electronic measuring devices and components. Hamilton also produced rocket fuel alloys, special metals for the Apollo program, missile timers and safety and arming devices for military applications. Hamilton continued to produce some of the finest American watches until 1. American watch company to survive global competition will into the 2. They truly represent the pinnacle of American watchmaking. Modern Hamilton Watches. If you own a modern, battery- powered quartz Hamilton Watch, you should know that it has no connection to the original Hamilton Watch Company. Watches bearing the Hamilton name can still be found today, but the brand is now owned by the Swatch Group, one of the largest Swiss watch conglomerates. Any Swatch service center can perform repairs on your modern Hamilton watch. SPONSORED ADVERTISEMENTSHamilton Watch Company. Hamilton Watch Serial Numbers and Production Dates. Total Production: Approx. Million Watches. Year. S/N1. 89. 31 - 2. Year. S/N1. 91. 07. Year. S/N1. 92. 72,2. IMPORTANT: Be sure to use the serial number on the movement (the works) of the watch. Do not use the serial number from the watch case. Can’t find your serial number in the table? Click here for an explanation and example of how to use our serial number tables. Need help finding the serial number on your watch? Click here for instructions on how to identify and open most common case types. This page shows how to to date your seiko watch by the serial number. Brief history of the Omega Watch Company including watch production dates, serial numbers and calibers. Brief History: Hamilton Watch Company Including Hamilton Watch Serial Numbers and Production Dates Lancaster, Pennsylvania 1892 - 1969. Wadsworth Case Serial Numbers. In addition to the movement serial numbers, cases made by Wadsworth can sometimes be used to date a watch. Check out the Wadsworth Case. Hamilton also used serial numbers preceded by a letter on certain grades from about the late 3. The following tables can help in identifying these watches. It is sometimes necessary to interpolate to estimate the particular year of a watch. B with C Serial Number & 4. B with 4. C Serial Number. B with 2. B or S Serial Number. Grade. S/NYear. 99. BC0. 01. 19. 40. 99. BC4. 0,0. 00. 19. BC6. 0,0. 00. 19. BC9. 0,0. 00. 19. BC1. 20,0. 00. 19. BC1. 70,0. 00. 19. BC2. 15,0. 00. 19. BC2. 55,0. 00. 19. BC3. 50,0. 00. 19. BC3. 90,0. 00. 19. BC4. 20,0. 00. 19. BC4. 55,0. 00. 19. BC5. 00,0. 00. 19. BC5. 20,0. 00. 19. BC5. 29,2. 00. 19. B4. C0. 00. 11. 94. B4. C4. 0,0. 00. 19. B4. C9. 0,0. 00. 19. B4. C1. 20,0. 00. B4. C1. 35,0. 00. B4. C1. 45,0. 00. Grade. S/NYear. 95. B2. B0. 01. 19. 41. B2. B4. 00. 19. 42. B2. B8. 00. 19. 43- -- 9. BS0. 01. 19. 41. 95. BS1. 50. 01. 94. 49. BS2. 80. 01. 94. 59. BS4. 00. 01. 94. 69. BS4. 50. 01. 94. 79. BS6. 50. 01. 94. 89. BS7. 50. 01. 94. 99. BS1. 0,0. 00. 19. BS2. 5,0. 00. 19. BS2. 8,0. 00. 19. BS3. 0,0. 00. 19. Partial List of Other Grades and Serial Numbers. Grade. S/NYear. 40. H5. 00. 01 - H5. 75. Y0. 01 - Y4. 53. 80. CY0. 01 - CY2. 32. A - 9. 14. 00. 0A1. E - 4. 80. 00. E1. F - 1. 03. 40. 0F1. H - 4. 39. 00. H1. G1. 01 - G6. 69. 40. BA0. 01 - A8. 90. H9. 80. HW0. 01 - HW1. IW0. 01 - W1. 05. J1. 00. 1 - J6. 70. MM0. 01 - M2. 01. E4. 02. 53. 01 - 4. SSS0. 01 - SS8. 74. IMPORTANT: Be sure to use the serial number on the movement (the works) of the watch. Do not use the serial number from the watch case. Can’t find your serial number in the table? Click here for an explanation and example of how to use our serial number tables. Need help finding the serial number on your watch? Click here for instructions on how to identify and open most common case types. At Renaissance Watch Repair, we are experts in the repair and restoration of Hamilton watches, and they are one of our personal favorites to work on! We are also always looking for Hamilton watches to purchase. Please contact us if you have any questions about the repair of your vintage Hamilton watch. SPONSORED ADVERTISEMENTS.
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