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Seth Thomas Research

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Seth Thomas Research

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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, parts movements and project watches. Assume that all movements are non-running, unless stated otherwise.


Contact us if you need more photos or information. Additional parts may be available.

Page Directory

  • 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

  • Watch Dials
  • Parts Movements
  • Check Out
  • Parts Invoices

Model 1

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

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.

$48.00

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. 

$18.00

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 spring with adjustment screw.

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

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 spring with adjustment screw.

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

Balance Staff

Balance Staff

Balance Staff

4-001

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

$25.00

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

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.

$48.00

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 spring with adjustment screw. Factory parts #357 and #380.

Out of Stock

Setting Lever

Regulator Spring

Setting Lever

5-009

Polished steel setting lever with 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

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

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

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

Dials

Seth Thomas dial

D-008

18-size Roman-numeral pressed dial will fit any 18-size movement. Some light hairlines at the right foot location, and the third foot at the 35-minute-mark has been cut off.

$5.00

Seth Thomas dial

D-003

18-size Arabic single-sunk dial will fit any 18-size movement. There are some light hairlines and edge chips.

$5.00

Seth Thomas dial

D-012

18-size red/black single-pressed Arabic dial will fit any 18-size movement. There is some repairable damage by the inner chapter edge, but all three dial feet are intact.

$5.00

Seth Thomas dial

D-006

Flawless 12-size Arabic dial for Model 22 or 6-size stretched Grades 12 to 19. All three dial feet are intact at 2, 22, and 41 minutes.

$10.00

Parts Movements

M13 Republic

P-010

18-size 7-jewel hunting lever-set two-tone Model 13 Republic with a bad balance staff. The dial is flawless and both the center and 4th pinions are intact.

$15.00

M12 Century

P-007

18-size 7-jewel open-face lever-set nickel Model 12 Century with a bad balance staff. The dial is flawless and both the center and 4th pinions are intact. 

$10.00

Model 23

P-005

12-size 15-jewel Grade 26 bridge Model 23 with a bad balance staff. The dial has some damage at the top left, but both the center and 4th pinions are intact. 

$15.00

Model 22

P-006

12-size 7-jewel Grade 326 Model 22 with a bad balance staff. The dial is shot, but both the center and 4th pinions are intact. 

$15.00

Model 14

P-008

6-size 7-jewel gilt Grade 46 Model 14 with a good balance staff. The dial is shot, but both the center, 4th, and male winding pinions are intact.

$15.00

Model 24

 

P-013

6-size 7-jewel pendant-set Model 24. The balance staff is blown but the dial is excellent, the mainspring is good, and it has a full set of hands. The clamshell case has a glass crystal but needs a bow.

$20.00

Check Out

Payment Instructions

Shipping Instructions

Shipping Instructions

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Shipping Instructions

Shipping Instructions

Shipping Instructions

  • Write us to confirm your shipping/mailing address.
  • Add $5.00 to your total per order for domestic shipping and contact us for international shipping prices.
  • Send movement pics so it can be logged on the charts.

Parts Invoices

Repair and Restoration Services

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Seth Thomas Research

PO Box #1 - Darien Center, NY 14040

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