7,152 examples logged as of 6/23/2022

Seth Thomas Research

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Seth Thomas Research

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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 - 10900 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:  25101 - 100000 / 500001 - 559000

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:  10901 - 99400 / 500501 - 517500

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:  35001 - 92000 / 509801 - 718200

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:  200001 - 352000

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:  515301 - 646000

  Production Years:  1896 to 1904

  Configuration:  3/4-plate open-face

  Winding / Setting:  Stem / Lever

  Comments:  Known as Old Eagle Series

 

Model 7

  Serial Numbers:  508001 - 648000

  Production Years:  1896 to 1904

  Configuration:  3/4-plate hunting

  Winding / Setting:  Stem / Lever

  Comments:  Known as Old Eagle Series

Models 6 and 7 Page

The Models 8 and 9

18-Size

Model 8

  SNs:  700001 - 851900 / 2500001 - 2593000

  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:  700101 - 853500

  Production Years:  1902 to 1913

  Configuration:  3/4-plate hunting

  Winding / Setting:  Stem / 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 / Lever

  Comments:  Known as Old Century Series

Models 10 and 11 Page

The Models 12 and 13

18-Size

Model 12

  Serial Numbers:  1000001 - 1301000

  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:  1700001 - 1780000

  Production Years:  1904 to 1913

  Configuration:  3/4-plate hunting

  Winding / Setting:  Stem / Lever

  Comments:  Known as New Century Series

Models 12 and 13 Page

The Model 14

6-Size

Serial Numbers:  100001 - 166000

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:  128001 - 160000

   Model 16:  160001 - 420000

   Model 17:  420001 - 950000

   Model 18:  950001 - 4017000

   Model 19:  3000001 - 3005000

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:  2000001 - 2005000

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:  1304501 - 1360000 / 2593001 - 2600000

Production Years:  1913 to 1915 

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:  3258701 - 3298000

  Production Years:  1913 to 1915

  Configuration: 3/4-plate open-face

  Winding / Setting:  Stem / Pendant 

  Comments:  Includes Centennial grade

 

Model 23

  Serial Numbers:  3500001 - 3505000   

  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:  3050001 - 3103000

Production Years:  1913 to 1915 

Configuration:  3/4-plate open-face

Winding / Setting:  Stem / Pendant

Comments:   Includes Centennial grade 

Model 24 Page

Seth Thomas Research

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