Chelsea Clock Museum

Joseph H. Eastman, 1843-1931     Joseph H. Eastman Obituary

E. Howard     Harvard        Boston         Waltham         Eastman         Chelsea

Chelsea Clock Company Precision Regulators

Harvard Register     Eastman Register

Fairhaven MFG & Vermont Clock Companies

Little & Eastman & Derry MFG Companies

U.S. Navy, U.S.L.H.E., U.S.L.S.S., U.S. Coast Guard

Chelsea & the Decorative Arts         100 Years

Chelsea Advertisements     Catalog Sequence

Chelsea Catalog 1906      Chelsea Catalog 1911      Chelsea Catalog 1923

Chelsea Leaflet A 1926

Serial Numbers      Large Dial Chelsea Clocks     Record Book One

Patent Documents

Vintage Chelsea Clocks For Sale

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Chelsea Clock Company, The First Hundred Years  

Surviving Harvard Clock Company Clocks and Movements

Harvard Clock Company and the year 1880 was the beginning of a marine clock dynasty.  Although Harvard was to exist for only 4 years, it set the standard for quality and innovation that has extended to the present day in the form of the Chelsea Clock Company, over 125 years. The Harvard Clock Company did continue after the initial first four years, as the Boston Clock Company, however, the finish and quality of workmanship was exceptional and unmatched in those first four years. Unfortunately the production records of the Harvard Clock Company have been lost. In an effort to reconstruct the history of Harvard clock production, the Chelsea Clock Museum has been recording known clocks and movement serial numbers. The following table is a record of this effort. In the beginning this effort seemed like it would produce little in the way of meaningful information. As time has passed and thanks to the expansion of the internet, more Harvard clocks and movements have surfaced. The numbers of known clocks and movements made during the four short years, 1880 to 1884, now allow clock historians to get an accurate and fascinating picture of what Harvard did during those early years. Known serial numbers range from 13 to 1186, at first indicating about 1200 clocks were produced. As data points have been recorded over the years, enough points have been recorded, to say with some certainty, that the series 600-999 was probably not used. Subtracting these unused serial numbers from the original 1200 indicates that the realistic number of Harvard clocks was most likely 800. Speculation is, that series 600-999 may have been used for a timing device that Harvard manufactured that has not produced any surviving examples. Until a clock or other device signed Harvard with a serial number in the unknown range comes to light, 800 clocks is the educated guess of present day students of Harvard Clock Company. An alternate theory and perhaps the most likely, is that Harvard, in an effort to make their production seem more than it actually was, jumped to serial number series 1000 after the first 600 clocks were made. If you have a Harvard clock and would like to add to the history of this record, please forward your serial number with a description of your clock or movement to the Curator of the Chelsea Clock Museum.

Serial Number  Movement type                 Jewel count        Description

1-99 series 

13                       back escapement marine      7 jewel                8.25" marine clock, Harvard/Crosby, nickel

27                       regulator movement              none                  Howard 70 type regulator clock, brass        

35                       front escapement marine      11 jewel               movement only, nickel

36                     front escapement marine      11 jewel               10" marine clock, Harvard Clock Co., cut out, Josiah P. Carle, nickel

38                       banjo movement                  none                    #5 banjo clock, brass

50                       banjo movement                   none                    movement only, brass

71                       front escapement marine      11 jewel                movement, bezel, and cut out dial, brass

75                       back escapement marine      11 jewel                Black Marble Shelf Clock, Harvard Clock co., cut out, brass

76                       back escapement marine       11 jewel               6.75" marine clock, American Steam Gauge, brass 

88                       back escapement marine        7 jewel                7 3/8" marine clock, Ashcroft Mfg. Co., Fletcher, brass

100-199 series

116                     back escapement marine       7 jewel                6.75" marine clock, Crosby Steam Gauge & Valve Co., brass

186                     back escapement marine       11 jewel              10" marine clock, Crosby steam Gauge & Valve Co., nickel

200-299 series

224                     front escapement marine       11 jewel              Cherry Shelf Clock, cut out, nickel

228                     front escapement marine       11 jewel              Large Metal Shelf Clock, cut out, nickel

230                     banjo movement                     none                  #5 banjo clock, brass.

233                     back escapement marine         7 jewel              4" marine clock, Harvard Clock Co., Boston, Light Vessel 44, brass, No signature

234/5                  back escapement marine         7 jewel              6" marine clock, American Steam Gauge Co., dated May 1895, brass, No signature

242                     back escapement marine         7 jewel              8.25" marine clock, Baker, Smith & Co., New York, brass, No signature

250                    back escapement marine         7 jewel               5" marine clock, American Steam Gauge Co., Boston, brass, No signature 

255                   back escapement marine       11 jewel              6.75" marine clock, Ashcroft MFG Co., nickel

287                     back escapement marine       11 jewel              5" marine clock, Crosby Steam Gauge & Valve Co., dated Dec 1, 1884, nickel

291                     back escapement marine       11 jewel              movement only, nickel

293                     back escapement marine       11 jewel              6" marine clock, Ashcroft MFG Co., S.S. Mascotte, nickel

300-399 series

322                     back escapement marine       11 jewel             6.75" marine clock, Ashcroft MFG Co., Champaign Water Works, nickel

350                     back escapement marine        7 jewel              8.25" marine clock, Crosby Steam Gauge & Valve Co., brass, #2 on dial

353                     back escapement marine        7 jewel              8.25" marine clock, American Steam Gauge Co., John Roach & Sons, New York

361                     back escapement marine        7 jewel              5" marine clock, Harvard Clock Co., Boston, Light Vessel 44, brass

362                     back escapement marine        7 jewel              movement only, brass

393                     back escapement marine        7 jewel              6" marine clock, Crosby Steam Gauge & Valve Co., brass, #II on dial

400-499 series

402                     back escapement marine         7 jewel             4" marine clock, Harvard Clock Co., Beverly Yacht Club 1887, brass

407                     back escapement marine         7 jewel             8.25" marine clock, Crosby Steam Gauge & Valve Co., brass

500-599 series     Carriage clocks only

542                     back escapement carriage      11 jewel             carriage clock, hand painted mask, large type fancy handle, nickel

550                     back escapement carriage      11 jewel             carriage clock, large type fancy handle, nickel

551                      back escapement carriage      11 jewel             carriage clock, large type fancy handle, nickel 

557                     back escapement carriage      11 jewel             carriage clock, Sparta type, nickel

559                     back escapement carriage      11 jewel             carriage clock, large type fancy handle, nickel

573                     back escapement carriage       11 jewel            carriage clock, large type fancy handle, nickel

590                     back escapement carriage       11 jewel            carriage clock, Queen Anne type, nickel

600-999 series      No Known clocks in this series

1000-1099 series

1004                   front escapement marine         11 jewel            Large Metal Shelf Clock, cut out, nickel

1029                    front escapement marine        11 jewel            Onyx Mantle, cut out, nickel, Boston over Harvard signature on dial

1031                    front escapement marine        11 jewel            Lattice Shelf Clock, cut out, nickel

1037                    front escapement marine        11 jewel            12" marine clock, cut out, Crosby Steam Gauge & Valve Co., nickel

1042                    front escapement marine        11 jewel            6" Shelf Pedestal Clock, circular cut out, nickel

1054                    front escapement marine        11 jewel            6.75" marine clock, Crosby Steam Gauge & Valve Co., cut out, nickel

1062                    front escapement marine        11 jewel            5" marine clock, Crosby Steam Gauge & Valve Co., cut out, nickel

1100-1199 series

1102                    front escapement marine          7 jewel            Oak Shelf Clock, cut out, brass

1126                    front escapement marine          7 jewel            Large Metal Shelf Clock, cut out, brass

1127                    front escapement marine          7 jewel             Large Metal Shelf Clock, cut out, brass

1140                    front escapement marine          7 jewel             movement only, brass

1145                    front escapement marine          7 jewel             Cherry Shelf Clock, cut out, brass, Boston over Harvard signature on dial    

1175                    front escapement marine         7 jewel             movement only, brass

1186                    front escapement marine          7 jewel             Large metal Shelf Clock, cut out, brass

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