Enter the serial number from the pocket watch movement below. Do not use the case number. Tips for looking up your watch

How to Find Info About Your Pocket Watch

The Pocket Watch Database has compiled data covering the major American pocket watch manufacturers and created an easy way to find information using the serial number on the watch movement. Here are a few tips to find information about your pocket watch:

  1. Always input the serial number from the pocket watch movement (the "mechanism" of the watch).
  2. Never use the serial number from the case or any other part.
  3. Always select the correct manufacturer, which is usually stamped on the watch movement or dial.
  4. If the manufacturer is not listed on the site, you may have a "private label" watch or it may not be American-made.
  5. If the serial number includes a letter, enter it along with the number when using the lookup feature.
  6. Many pocket watch case backs screw off. Others may require a dull wide blade to pry or pop the cover. Be careful not to scratch or damage the movement.
  7. Consider uploading images of your watch by creating a collection account on the website. This is compeltely free and assists in promoting research in American horology.
  8. Understand that many companies did not keep accurate or complete records. As a result, information displayed on this site may have inaccuracies. This is to be expected, and we have included an option to report inaccurate information on the result pages so the database can be continually improved.
Pocket Watch Serial Number Lookup - Hamilton, South Bend, Illinois, Rockford, Waltham & Elgin Pocket Watches
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Rockford Grade 905

Grade 905 is a 21j Openface watch maufacturered by Rockford. The size 18s, Model 9 movement features a nickel finish and is adjusted to 5 positions, isochronism and temperature. During the time the watch was manufactured, it would have qualified for railroad service and is considered to be railroad grade. Each movement was fitted at the factory with a double-sunk dial.

Grade 905 Movement Characteristics

  • Size18s
  • Jewels21j
  • ConfigurationOpenface
  • FinishNickel
  • Model9
  • SettingLever
  • AdjustedYes
  • Railroad GradeYes

Grade 905 Production Info

  • Total Production700
  • Number of Runs5
  • Years1898-1901
  • First Serial519,601
  • Last Serial574,300
  • Largest Run200
  • Smallest Run100
  • Most Common Run100

Research Notes:

The Grade 905 represents one of the finest 18 Size movements produced by the Rockford Watch Company. In company catalogs, the Grade 905 and complimentary Grade 805 were positioned just below the premium Grades 800 and 900. According to factory serial lists, a total of 1,000 movements were manufactured within five distinct runs. However, the last run has been determined to be mixed with Grade 905 and Grade 918 movements as the company moved to market the 918 more heavily for railroad service. The Grade 905 was listed with a price of $50.00 in the 1907 Rockford Catalog and was still being offered on the market as late as 1913.

Movements feature a highly detailed nickel damaskeening design with wavy rays emanating from the center under a wide checkerboard ribbon positioned diagonally from edge to edge. Despite the sharing similar characteristics, the Grade 918 features a slightly distinguishable damaskeening pattern with a tight pinwheel design slightly curving from the center origin to the edge under a similar wide checkerboard ribbon. Most movements are marked "Rockford Watch Co. - U.S.A. - 21 Jewels - Adjusted" with some being adorned with the "RG" insignia.

Mixed Last Run:
The last Grade 905 run designated in factory serial lists [574,001-574,500] is mixed with movements finished as Grade 918. While extremely similar, the 905 and 918 feature distinct damaskeening patterns that can be used to distinguish these grades when the grade number is not explicitly marked.

Last Run Observations:

574030: Reported as Marked "918" [NAWCC Forum]
574036: Reported as Marked "918" [NAWCC Forum]
574049: 918 Marked "Rockford Watch Co. - 918 - 21 Jewels - Adjusted - Temperature - Five Positions - Double Roller" [Verified: JH]
574066: 918 Marked "Rockford Watch Co. - 918 - 21 Jewels - Adjusted - Temperature - Five Positions - Double Roller" [Verified: PWDB]
=== Corrected Run: 918 [574001-574100]

574104: 905 Marked "Rockford Watch Co. - U.S.A. - 21 Jewels - Adjusted - RG" [Verified: JH]
574138: Reported as Marked "905" [NAWCC Forum]
574155: Reported as Marked "905" [NAWCC Forum]
574177: Reported as 905 [NAWCC Forum]
574193: Reported as 905 [NAWCC Forum]
574204: Reported as Marked "905" [NAWCC Forum]
574207: 905 Marked "Rockford Watch Co. - U.S.A. - 21 Jewels - Adjusted - RG" [Verified: JH]
574280: Reported as Marked "905" [NAWCC Forum]
=== Corrected Run: 905 [574101-574300]

574360: Reported as Marked "918" [NAWCC Forum]
574374: Reported as Marked 918 [PWDB]
574461: Reported as Marked "918" [NAWCC Forum]
=== Corrected Run: 918 [574301-574500]


Associated Grades: