Seth Thomas Research

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Seth Thomas Research

Seth Thomas ResearchSeth Thomas ResearchSeth Thomas Research

Signed in as:

filler@godaddy.com

  • 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
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    • Model 22
    • Model 23
    • Model 24
  • Grades
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The Parts Store

Here's a selection of some of the more necessary replacement parts by model, complete with the original factory number, along with dials for different sizes and models. Contact us if you need more photos or information. Additional watch parts may be available.


We do NOT sell clock parts.

Page Directory

  • Project Movements
  • Parts for Model 1
  • Parts for Model 2
  • Parts for Model 3
  • Parts for Model 4

  • Parts for Model 5
  • Parts for Model 8
  • Parts for Model 9
  • Parts for M10 - 13
  • 18-size Dials

  • 16-size Dials
  • 12-size Dials
  • 6-size Dials
  • Check Out
  • Parts Invoices

Project Movements

Model 2

PM-201

Rare California private label for an A J Nichols from Lompoc. 18-size 15-jewel Grade 152 with a broken balance staff and the mainspring does not build tension. Excellent matching dial and all three hands are correct. S/N 60719. 

$65.00

Model 2

PM-202  

18-size 11-jewel lever-set Grade 56 Seth Thomas hunter for a Louis Addor from Sedalia, Missouri with a good balance staff and mainspring but the roller jewel is either broken or missing. S/N 505703.

$35.00

Model 2

PM-203  

18-size 11-jewel lever-set Grade 56 private label for an S Grabowsky of Bay City, Michigan. Balance staff is good, but the mainspring is broken. The center and 4th pinions are both intact. S/N 60557.

$35.00

Model 3

PM-301

Early 11-jewel 18-size open-face lever-set Grade 55 (the M3 debuted at S/N 10901) with a good balance staff and mainspring but is too gummed up to run. Correct dial is in decent shape but the seconds bit has become detached. S/N 11648.

$35.00

Model 5

PM-501

Rare 15-jewel 18-size Grade 204 in the Chautauqua grade, presumably for the Chautauqua Institute in New York. Only eight have been logged and only three with matching dials; this one is salvageable. Running weakly and definitely needs servicing. S/N 221224. 

$160.00

Model 5

PM-502

Scarce 18-size 21-jewel lever-set Grade 291 Seth Thomas with a good balance staff and mainspring but but is too gummy to run. The two-tone pattern is fairly bright and the 4th pivot is intact. The total production was 1,100 pieces in four separate runs. S/N 235768.

$185.00

Model 7

PM-701

18-size 7-jewel Model 7 for parts only. The balance wheel is missing, but there are plenty of parts including screws, springs, gear train, canon pinion, etc. S/N 577553.

$15.00

Model 7

PM-702

18-size 7-jewel Model 7 hunting Old Eagle. The balance staff and mainspring are intact but is too gummed up to run. Pressed dial has a single edge chip. S/N 563795.

$45.00

Model 12

PM-121

18-size 7-jewel open-face Century. The balance staff is shot but the mainspring is intact. Matching dial is flawless. No serial number.

$20.00

Model 13

PM-131

18-size 7-jewel two-tone hunting Republic. The balance staff is shot but the mainspring is intact. Matching dial is flawless. S/N 1722993.

$30.00

Model 15

PM-151

6-size 7-jewel two-tone hunting Grade 35. The balance staff and mainspring are intact but is too gummed up to run. Pressed dial has a single edge chip. S/N 155219.

$20.00

Model 24

PM-241

Cased 6-size (marketed as 4-size) 7-jewel open-face Grade 320. The balance staff and mainspring are intact but is too gummed up to run. Glass crystal. S/N 3082439.

$30.00

Model 1 Parts

Click

Ratchet Bridge

Pallet Fork

1-001

Ratchet wheel click.

Factory part #9.

$18.00

Pallet Fork

Ratchet Bridge

Pallet Fork

1-002

Pallet fork with arbor and stones.

Factory part #26.

$58.00

Ratchet Bridge

Ratchet Bridge

Ratchet Bridge

1-003

Ratchet wheel bridge.

Factory part #6.

$25.00

Setting Lever

Winding Pinion

Ratchet Bridge

1-004

Setting lever with stud.

Factory part #53.

$45.00

Winding Pinion

Winding Pinion

Winding Pinion

1-005

Winding pinion with 14 slanted teeth.

Factory part #34.

$28.00

Yoke

Winding Pinion

Winding Pinion

1-006

Model 1 yoke.

Factory part #75.

$48.00

Model 2 Parts

Balance Staff

Barrel and Arbor

Barrel and Arbor

2-001

Single-roller balance staff for hunting.

Factory part #103.

$25.00

Barrel and Arbor

Barrel and Arbor

Barrel and Arbor

2-002

Mainspring barrel with cover and arbor.

Factory parts #105 and #106.

$45.00

Pallet Fork

Barrel and Arbor

Setting Lever

2-003

 Pallet fork with arbor and stones.

Factory part #146.

$28.00

Setting Lever

Setting Lever

Setting Lever

2-004

 Setting lever with stud.

Factory part #188. 

$28.00

Lever Spring

Setting Lever

Lever Spring

2-005

 Setting lever spring for all higher grades.

Factory part #189. 

$25.00

Plate Screw

Setting Lever

Lever Spring

2-006

Plate screw for hunting, blued or plain. Factory part #177. 

$12.00

Regulator

Regulator Spring

Regulator Spring

2-007

Regulator for flat hairspring, hunting.

Factory part #162. 

$38.00

Regulator Spring

Regulator Spring

Regulator Spring

2-008

Regulator gooseneck spring.

Factory part #164. 

$75.00

Winding Pinion

Regulator Spring

Winding Pinion

2-009

Winding pinion for hunting, 15 teeth.

Factory part #160. 

$30.00

Yoke

Yoke Spring

Winding Pinion

2-010

Yoke for hunting.

Factory part #210. 

$35.00

Yoke Boss

Yoke Spring

Yoke Spring

2-011

Boss and screw for hunting yoke.

Factory parts #211 and #185. 

$32.00

Yoke Spring

Yoke Spring

Yoke Spring

2-012

Yoke spring for hunting.

Factory part #212. 

$18.00

Model 3 Parts

Balance Staff

Balance Staff

Balance Staff

 3-001

Single-roller balance staff for open-face. Factory part #103. 

$25.00

Case Screws

Balance Staff

Balance Staff

 3-002

Case screw, half-headed, quantity of 2. 

Factory part #170. 

$32.00

Escape Wheel

Balance Staff

Escape Wheel

 3-003

Brass escape wheel with pinion.

Factory part #196. 

$35.00

Lever Spring

Regulator Spring

Escape Wheel

 3-004

Setting lever spring for all higher grades. Factory part #189. 

$25.00

Regulator

Regulator Spring

Regulator Spring

 3-005 

Regulator for flat hairspring, open-face.

Factory part #161. 

$38.00

Regulator Spring

Regulator Spring

Regulator Spring

 3-006 

Regulator gooseneck spring.

Factory part #163.

Out Of Stock

Setting Lever

Setting Lever

Setting Lever

 3-007

Setting lever with stud.

Factory part #187. 

$28.00

Yoke Spring

Setting Lever

Setting Lever

 3-008

Yoke spring for open-face.

Factory part #212. 

$18.00

Model 4 Parts

Balance Staff

Balance Staff

Balance Staff

4-001

Single-roller balance staff for key-wind. Factory part #103. 

$20.00

Click

Balance Staff

Balance Staff

4-002

Ratchet wheel click for key-wind.

Factory part #116. 

$8.00

Click Spring

Balance Staff

Ratchet Bridge

4-003

Click rebound spring.

Factory part #117. 

$18.00

Ratchet Bridge

Ratchet Bridge

Ratchet Bridge

4-004

Ratchet bridge for key-wind.

Factory part #110. 

$30.00

Ratchet Wheel

Ratchet Bridge

Ratchet Wheel

4-005

Ratchet wheel for key-wind.

Factory part #207. 

$28.00

Model 5 Parts

Balance staff

Balance staff

Balance staff

5-001

SR balance staff for 11-jewel and higher. Factory part #305.

$25.00

Escape Wheel

Balance staff

Balance staff

5-002

Steel escape wheel with pinion.

Factory part #397.

$40.00

Lever Spring

Balance staff

Lever Spring

5-003

Setting lever spring for all higher grades. Factory part #389.

$25.00

Pallet Fork

Plate Screws

Lever Spring

5-004

  Pallet fork with arbor and stones.

Factory part #342.

$45.00

Plate Screws

Plate Screws

Plate Screws

5-005

Flat polished plate screws, set of three. Factory part #375.

$45.00

Regulator

Plate Screws

Plate Screws

5-006

Regulator arm for Breguet hairspring.

Factory part #354.

Out Of Stock

Regulator Index

Regulator Spring

Regulator Spring

5-007

Regulator index in gilt. Nickel available. Factory part #355.

$18.00

Regulator Spring

Regulator Spring

Regulator Spring

5-008

Regulator gooseneck spring.

 Factory part #357.

$95.00

Setting Lever

Regulator Spring

Setting Lever

5-009

Steel setting lever with or without stud.

Factory part #388.

$32.00

Yoke

Yoke Spring

Setting Lever

5-010

Polished steel yoke for all higher grades.

Factory part #407.

$45.00

Yoke Boss

Yoke Spring

Yoke Spring

5-011

Polished yoke boss with screw.

Factory parts #386 and #408.

$35.00

Yoke Spring

Yoke Spring

Yoke Spring

5-012

Yoke spring for Model 5.

Factory part #409.

$18.00

Model 8 Parts

Balance Staff

Balance Bridge Screw

Barrel and Arbor

8-001

New Eagle single-roller balance staff. Factory part #603.

$22.00

Barrel and Arbor

Balance Bridge Screw

Barrel and Arbor

8-002

New Eagle mainspring barrel w/ arbor.

Factory parts #605 and #606.

$30.00

Balance Bridge Screw

Balance Bridge Screw

Balance Bridge Screw

8-003

New Eagle balance bridge screw.

Factory part #652.

$20.00

Fourth Wheel

Ratchet Wheel

Balance Bridge Screw

8-004

New Eagle fourth wheel with pinion. Factory part #677.

$30.00

Center Wheel

Ratchet Wheel

Ratchet Wheel

8-005

New Eagle center wheel with pinion. Factory part #672.

$35.00

Ratchet Wheel

Ratchet Wheel

Ratchet Wheel

8-006

New Eagle 42-tooth ratchet wheel.

Factory part #684.

$28.00

Ratchet Bridge

Ratchet Bridge

Ratchet Bridge

8-007

New Eagle open-face ratchet wheel bridge. Factory part #607.

$20.00

Regulator

Ratchet Bridge

Ratchet Bridge

8-008

New Eagle open-face regulator.

Factory part #646.

$24.00

Setting Lever

Ratchet Bridge

Winding Wheels

8-009

 NE open-face setting lever w/out stud. Factory part #668.  

$22.00

Winding Wheels

Winding Wheels

Winding Wheels

8-010

New Eagle winding and idler wheels.

Factory parts #681 and #682.

$28.00

Yoke

Winding Wheels

Yoke

8-011

 New Eagle open-face yoke.

Factory part #685.

$24.00

Model 9 Parts

Balance Staff

Balance Bridge Screw

Barrel and Arbor

9-001

New Eagle single-roller balance staff.

Factory part #603.

$22.00

Barrel and Arbor

Balance Bridge Screw

Barrel and Arbor

9-002

New Eagle mainspring barrel w/ arbor.

Factory parts #605 and #606. 

$30.00

Balance Bridge Screw

Balance Bridge Screw

Balance Bridge Screw

9-003

New Eagle balance bridge screw.

Factory part #652.

$20.00

Fourth Wheel

Ratchet Wheel

Balance Bridge Screw

9-004

New Eagle fourth wheel with pinion. Factory part #677.

$30.00

Center Wheel

Ratchet Wheel

Ratchet Wheel

9-005

New Eagle center wheel with pinion. Factory part #672.

$35.00

Ratchet Wheel

Ratchet Wheel

Ratchet Wheel

9-006

New Eagle 42-tooth ratchet wheel.

Factory part #684.

$28.00

Ratchet Bridge

Ratchet Bridge

Ratchet Bridge

9-007

New Eagle hunting ratchet wheel bridge. Factory part #608. 

$20.00

Regulator

Ratchet Bridge

Ratchet Bridge

9-008

New Eagle hunting regulator.

Factory part #647.

$24.00

Setting Lever

Ratchet Bridge

Winding Wheels

9-009

NE hunting setting lever w/out stud. Factory part #669. 

$22.00

Winding Wheels

Winding Wheels

Winding Wheels

9-010

 New Eagle winding and idler wheels.

Factory parts #681 and #682.

$28.00

Yoke

Winding Wheels

Yoke

9-011

 New Eagle hunting yoke.

Factory part #686. 

$24.00

Models 10 - 13 Parts

Barrel and Arbor

Barrel and Arbor

Barrel and Arbor

C-001

Century Series mainspring barrel w/ arbor.  Factory parts #805 and #806.

$22.00

Click

Barrel and Arbor

Barrel and Arbor

C-002

Ratchet wheel click.

Factory part #115.

$8.00

Click Spring

Click Spring

Click Spring

C-003

Click rebound spring.

Factory part #715.

$10.00

Yoke Spring

Click Spring

Click Spring

C-004

Yoke spring for open-face.

Factory part #777.

$10.00

18-size Dials

Models 1 - 4

D-101

Single-sunk Roman dial with cut seconds for all Models 1 and 4, and early Models 2 and 3 with feet 13 and 45 minutes.

Sold Out!

Models 1 - 4

D-102

Single-sunk Roman dial with cut seconds for all Models 1 and 4, and early Models 2 and 3 with feet 13 and 45 minutes.

$15.00

D-202

Flat Roman metal replacement dial for later Model 2 with feet at 13 and 45 minutes.

$15.00

Model 5

D-501

Pressed red/black Arabic #1225 dial for later Model 5 with feet at 13, 34 and 45 minutes.

Sold Out!

Models 8 and 9

D-801

Pressed Arabic dial for open-face Model 8 with feet at 13 and 45 minutes, though one is missing.

$5.00

D-901

Pressed Roman dial for hunting Model 9 with feet at 13, 34 and 45 minutes, though one is missing.

$5.00

Models 10 - 13

D-121

Pressed Roman dial for Century grade with feet at 13, 34 and 45 minutes.

$10.00

16-size Dials

Model 21

D-211

Pressed red/black Arabic dial with feet at 13, 34 and 46 minutes.

$15.00

12-size Dials

Model 22 or 23

D-222

Pressed black-only Arabic dial for 12-size or 6-size stretched Grades 12 to 19 with feet at 2, 22 and 41 minutes.

$15.00

Model 22 or 23

D-223

Pressed red/black Arabic dial for 12-size or 6-size stretched Grades 12 to 19 with feet at 2, 22 and 41 minutes.

$15.00

6-size Dials

Models 15 to 19 for Hunter

D-151

NOS pressed black-only Roman dial for 6-size hunter with seconds bit with feet at 17, 37 and 56 minutes.

Sold Out!

Models 15 to 19 for Open Face

D-152

Pressed red/black Roman dial for 6-size open-face without seconds bit with feet at 3, 22 and 41 minutes.

$10.00

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© 2025 - Seth Thomas Research v3.2.18k

Seth Thomas Highlights

The rarest regular-production two-tone pattern of all, made in one block of seventy - and then never again.

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