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Illinois pocket watch conversion

Illinois Marine Special from 1923 with a Guilloche Dial

$2,449.00
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This timepiece is a pocket watch conversion, and the movement can be seen through the caseback. The timepiece features 21 jewels, a guilloche dial, and is a Marine Special.

This piece is in our 44 mm conversion case, learn more about case size and profile.

*Every detail—from servicing, restoring, repairing and casing—is completed in our shop in Little Rock, Arkansas, USA*

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This timepiece is a pocket watch conversion, and the movement can be seen through the caseback. The timepiece features 21 jewels, a guilloche dial, and is a Marine Special.

This piece is in our 44 mm conversion case, learn more about case size and profile.

*Every detail—from servicing, restoring, repairing and casing—is completed in our shop in Little Rock, Arkansas, USA*

This timepiece is a pocket watch conversion, and the movement can be seen through the caseback. The timepiece features 21 jewels, a guilloche dial, and is a Marine Special.

This piece is in our 44 mm conversion case, learn more about case size and profile.

*Every detail—from servicing, restoring, repairing and casing—is completed in our shop in Little Rock, Arkansas, USA*

Illinois Watch Co. was in operation from 1869-1948 and produced some of the most renowned railroad-grade movements ever manufactured. Watches were produced in their factory in Springfield, Illinois.

This Illinois timepiece was crafted in Springfield, Illinois, in 1923. It features the Marine Special movement, a rare 21-jewel in-house caliber produced in the early 1900s. This is the first movement we have encountered bearing the name “Marine Special.” Meticulously restored and serviced, the movement retains its original damaskeening, which resembles a net, evoking a maritime theme. The golden brilliance of the jewel settings has been carefully restored through hand polishing. The movement components themselves remain in their original condition, preserving the golden accents added by Illinois at the time of manufacture. The hands retain their original heat-blued finish, exactly as Illinois applied them. The metal dial showcases bold numerals with an intricate guilloché motif at its center that is dynamic in various lighting conditions.

The timepiece is encased in a 316L stainless steel conversion case, designed with adjustable lugs for easy winding and setting, ensuring a comfortable fit across various wrist sizes. The case includes front, back, and crown gaskets, providing water resistance up to 50 meters, though it is recommended to remove the watch before engaging in water activities. The timepiece comes fully serviced and ready for your future adventures.

Watch Performance

  • Accuracy: +/- 10 seconds per day

  • Amplitude: 300 degrees

  • Beat Error: 1.5 ms

  • Frequency: 18,000 (5 beats per second)

  • Power Reserve: 24-30 hours

  • Complication: Sub second hand

 

Watch Specifications

  • Manufacture: Illinois

  • Location: Springfield, Illinois

  • Year Manufactured: 1923

  • Dial Material: Metal (excellent)

  • Jewels: 21 jewels

  • Case Diameter: 44 mm

  • Front Crystal: Domed AR coated sapphire

  • Back Crystal: Flat AR coated sapphire

  • Case Material: 316L stainless

  • Lug width: 22 mm

  • Lug to Lug: 47 mm (52 mm with crown)

  • Height: 13 mm

  • Original Case Included: No

  • Serial Number: 4481514

  • Water Resistance: 50 meters

  • Warranty: Full 1-Year Warranty

All Frett & Co. Clockworks watches come with a full 1-year warranty unless otherwise stated.