Serial Numbers

Chelsea Clock Company

Serial Number Record Book Data

Serial Number vs. Sale Date

Serial Number     Date

000001-003937       1897-1899

003938-016459       1900-1904

016460-059641       1905-1909

059642-097528       1910-1914

097529-136237       1915-1919

136238-159719       1920-1924

159720-194237       1925-1929

194238-213894       1930-1934

213895-256235       1935-1939

256236-472765       1940-1944

472766-559240       1945-1949

559241-598659       1950-1954

598660-638906       1955-1960

638907-673459       1960-1964

673460-743137       1965-1969

743138-780288       1970-1974

786289-827760       1975-1979

827761-857063       1980-1984

857064-868171       1985-1989

868172-                    1990-

Notes on Serial Number Data

1. Most clocks are numbered on the case and the movement. These numbers in most all cases match, but occasionally movements were switched by the factory or the retailing jeweler.

2. The serial number record data shows the sale date of a given serial number. Prior to 1910 inventory control was not optimized and finished clocks remained in company inventory for years. The dates above show the average sale date for a given serial number. Specific clock sale dates may vary significantly.

3. Serial numbers were issued consecutively as movements were manufactured in groups of like type movements. These were then fitted to cases to meet special orders or for general stock.

4. The record books appear to have been transcribed from working lists by clerks. Occasionally omissions and errors are noted.

5. Prior to 1915 the record data lists serial number, date sold, customer, movement type, and case size, finish, and type. After 1915 case size, finish, and type were generally omitted.

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