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Seth Thomas Research

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    • Model 1
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    • Models 6 and 7
    • Models 8 and 9
    • Models 10 and 11
    • Models 12 and 13
    • Model 14
    • Models 15 to 19
    • Model 20
    • Model 21
    • Models 22 and 23
    • Model 24
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    • Home
    • Lookup
    • Models
      • Model 1
      • Model 2
      • Model 3
      • Model 4
      • Model 5
      • Models 6 and 7
      • Models 8 and 9
      • Models 10 and 11
      • Models 12 and 13
      • Model 14
      • Models 15 to 19
      • Model 20
      • Model 21
      • Models 22 and 23
      • Model 24
    • Grades
    • History
    • Learning
      • Dials
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      • Records
      • Specifics
      • Swiss Fakes
    • Store
    • Contact

Seth Thomas Research

Seth Thomas ResearchSeth Thomas ResearchSeth Thomas Research
  • Home
  • Lookup
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Identify The Model

If you need help identifying your Seth Thomas pocket watch, enter the serial number of the movement - not the case - into the Search box below and then scroll down to that model.

Find The Serial Number

The Model 1

18-Size

Serial Numbers:  1 - 10,900 uninterrupted

Production Years:  1885 to 1888

Configuration:  3/4-plate open-face  

Winding / Setting:  Stem / Lever

Comments:  Both slow and quick gear train

Model 1 Page

The Model 2

18-Size

SNs:  25,101 - 100,000 / 500,001 - 559,000

Production Years:  1888 to 1900 

Configuration:  3/4-plate hunting

Winding / Setting:  Stem / Key / Lever

Comments:  Includes Henry Molineux grade

Model 2 Page

The Model 3

18-Size

SNs:  10,901 - 99,400 / 500,501 - 517,500

Production Years:  1888 to 1898  

Configuration:  3/4-plate open-face

Winding / Setting:  Stem / Lever

Comments:  Includes Molineux & Ball grade

Model 3 Page

The Model 4

18-Size

SNs:  35,001 - 92,000 / 509,801 - 718,200

Production Years:  1888 to 1902  

Configuration:  3/4-plate hunting or open-face

Winding / Setting:  Key-wind / key-set

Comments:  Widest SN range of the lower models

Model 4 Page

The Model 5

18-Size

Serial Numbers:  200,001 - 352,000

Production Years:  1893 to 1913  

Configuration:  Full-plate open-face

Winding / Setting:  Stem / Pendant / Lever

Comments:  Includes Maiden Lane grade

Model 5 Page

The Models 6 and 7

18-Size

Model 6

  Serial Numbers:  515,301 - 646,000

  Production Years:  1896 to 1904

  Configuration: 3/4-plate open-face

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as Old Eagle Series

 

Model 7

  Serial Numbers:  508,001 - 648,000

  Production Years:  1896 to 1904

  Configuration:  3/4-plate hunting

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as Old Eagle Series

Models 6 and 7 Page

The Models 8 and 9

18-Size

Model 8

  SNs:  700,001 - 851,900 / 2,500,001 - 2,593,000

  Production Years:  1902 to 1913

  Configuration: 3/4-plate open-face

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as New Eagle Series

 

Model 9

  Serial Numbers:  700,101 - 853,500

  Production Years:  1902 to 1913

  Configuration:  3/4-plate hunting

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as New Eagle Series

Models 8 and 9 Page

The Models 10 and 11

18-Size

Model 10

  Serial Numbers:  All examples unmarked

  Production Years:  Unknown

  Configuration:  3/4-plate open-face

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as Old Century Series

 

Model 11

  Serial Numbers:  All examples unmarked

  Production Years:  Unknown

  Configuration:  3/4-plate hunting

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as Old Century Series

Models 10 and 11 Page

The Models 12 and 13

18-Size

Model 12

  Serial Numbers:  1,000,001 - 1,301,000

  Production Years:  1904 to 1913

  Configuration:  3/4-plate open-face

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as New Century Series

 

Model 13

  Serial Numbers:  1,700,001 - 1,780,000

  Production Years:  1904 to 1913

  Configuration:  3/4-plate hunting

  Winding / Setting:  Stem / Pendant / Lever

  Comments:  Known as New Century Series

Models 12 and 13 Page

The Model 14

6-Size

Serial Numbers:  100,001 - 166,000

Production Years:  1890 to 1910

Configuration:  3/4-plate hunter

Winding / Setting:  Stem / Lever

Comments:  Only model with male stem.

Model 14 Page

The Models 15 to 19

6-Size

Serial Numbers:

   Model 15: 128,001 - 160,000

   Model 16: 160,001 - 420,000

   Model 17: 420,001 - 950,000

   Model 18: 950,001 - 4,017,000

   Model 19: 3,000,001 - 3,005,000

Production Years:  1904 to 1913

Configuration:  3/4-plate hunter

Winding / Setting:  Stem / Lever

Comments:  Eagle Series / Includes 12 x 6 movements

Models 15 to 19 Page

The Model 20

0-Size

Serial Numbers:  2,000,001 - 2,005,000

Production Years:  1908 to 1913

Configuration:  3/4-plate hunting

Winding / Setting:  Stem / Pendant

Comments:  Includes wristwatch models

Model 20 Page

The Model 21

16-Size

SNs:  1,304,501 - 1,360,000 / 2,593,001 - 2,600,000

Production Years:  1913 to 1914 

Configuration:  3/4-plate open-face

Winding / Setting:  Stem / Pendant

Comments:  Includes Centennial grade

Model 21 Page

The Models 22 and 23

12-Size

Model 22

  Serial Numbers:  3,258,701 - 3,298,000

  Production Years:  1913 to 1914

  Configuration: 3/4-plate open-face

  Winding / Setting:  Stem / Pendant 

  Comments:  Includes Centennial grade

 

Model 23

  Serial Numbers:  3,500,001 - 3,505,000   

  Production Years:  1913 only

  Configuration: Bridge model open-face

  Winding / Setting:  Stem / Pendant 

  Comments:  Four grades including 17-jewel Adjusted

Models 22 and 23 Page

The Model 24

4-Size

Serial Numbers:  3,050,001 - 3,103,000

Production Years:  1913 to 1914 

Configuration:  3/4-plate open-face

Winding / Setting:  Stem / Pendant

Comments:   Includes Centennial grade 

Model 24 Page

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