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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 "guts" of the watch).
  2. Never use the serial number from the case or any other part.
  3. If the serial number includes a letter, enter it along with the number when using the lookup feature.
  4. 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.
  5. Always select the correct manufacturer, which is usually stamped on the watch movement.
  6. If the manufacturer is not listed on the site, you may have a "private label" watch or it may not be American-made.
  7. 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
  Serial Number:
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Keystone Watch Case Co.

Company Profile: Keystone Watch Case Co.

Location: Philadelphia, Riverside, New Jersey

Years of Operation: 1875-1956

Trademarks & Hallmarks

Crown 14 K. Filled (Keystone Watch Case Co.)

Keystone Watch Case Co.

Crown 14 K. Filled

Trademark Issued:
November 13, 1900

Gold-Filled

14K Gold-Filled

Crown 10 K. Filled (Keystone Watch Case Co.)

Keystone Watch Case Co.

Crown 10 K. Filled

Trademark Issued:
November 13, 1900

Gold-Filled

10K Gold-Filled

Imperial (Keystone Watch Case Co.)

Keystone Watch Case Co.

Imperial

5 Yr. Gold-Filled

Peer (Keystone Watch Case Co.)

Keystone Watch Case Co.

Peer

Trademark Issued:
September 15, 1914

15 Yr. Gold-Filled

Perfection (Keystone Watch Case Co.)

Keystone Watch Case Co.

Perfection

Trademark Issued:
February 06, 1906

Electroplated

Planet (Keystone Watch Case Co.)

Keystone Watch Case Co.

Planet

Trademark Issued:
January 31, 1893

20 Yr. Gold-Filled

Premier (Keystone Watch Case Co.)

Keystone Watch Case Co.

Premier

5 Yr. Gold-Filled

Princess (Keystone Watch Case Co.)

Keystone Watch Case Co.

Princess

25 Yr. Gold-Filled

Regal B&B (Keystone Watch Case Co.)

Keystone Watch Case Co.

Regal B&B

10 Yr. Gold-Filled

Royal B&B (Keystone Watch Case Co.)

Keystone Watch Case Co.

Royal B&B

20 Yr. Gold-Filled

Victory (Keystone Watch Case Co.)

Keystone Watch Case Co.

Victory

Trademark Issued:
January 01, 1901

10 Yr. Gold-Filled

Winner (Keystone Watch Case Co.)

Keystone Watch Case Co.

Winner

10 Yr. Gold-Filled

[Crown and Scales] (Keystone Watch Case Co.)

Keystone Watch Case Co.

[Crown and Scales]

Trademark Issued:
August 08, 1911

Gold-Filled

14K Gold-Filled

[Scales] (Keystone Watch Case Co.)

Keystone Watch Case Co.

[Scales]

Gold-Filled

10K Gold-Filled

C (Keystone Watch Case Co.)

Keystone Watch Case Co.

C

Trademark Issued:
July 01, 1902

Rolled Gold

Crown
[Crown] (Keystone Watch Case Co.)

Keystone Watch Case Co.

Crown
[Crown]


Trademark Issued:
November 13, 1900

25 Yr. Gold-Filled