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The Encyclopedia of Horology

Pocket watch · Open-face pocket watch

Illinois Sangamo Special pocket watch

Partially verified

This early 20th-century Illinois Watch Co. 'Sangamo Special' 17-size open face pocket watch dates to circa 1925, according to Schmitt Horan & Co. It features a 23-jewel, 60-hour stem-wind and lever-set movement adjusted to temperature, isochronism, and six positions. The auction house reports a damascened nickel plate movement with a lever escapement, cut bimetallic balance with gold screws, gold settings, a gold wheel train, and a whiplash micrometric regulator. Housed in a hinged back and bezel Sangamo Special case, it displays a double-sunk white enamel Canadian 24-hour dial with marginal minutes and blued steel Sangamo hands.

Front view of the Illinois Sangamo Special pocket watch showing the Canadian 24-hour dial and open face case
Front view of the Illinois Sangamo Special pocket watch showing the Canadian 24-hour dial and open face case — Schmitt Horan & Co.. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.bidsquare.com
Category
Pocket watch · Open-face pocket watch
Maker / attribution
Illinois Watch Co.
Reference
Not recorded
Catalogue / lot identifier
579
Source-reported date
circa 1925
Country
United States
Source-reported serial
4626983

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Dial and Visual Presentation

The pocket watch displays a double-sunk white enamel dial signed 'ILLINOIS', featuring primary black Arabic numerals 1 through 12 alongside an inner chapter of red Arabic numerals 13 through 24 for Canadian 24-hour timekeeping. The number '18' is printed within the recessed subsidiary seconds dial located at 6 o'clock, complemented by an outer perimeter track marking minutes 1 to 60 with red numerals highlighting every five-minute interval.

Tracking across this layout are blued steel pierced hands described in the auction cataloguing as 'Sangamo' hands. The watch is presented in an open-face, gold-toned case fitted with an acrylic crystal, an engraved decorative bow, and a winding crown situated at the 12 o'clock position.

Evidence for this section
  • “White enamel dial signed 'ILLINOIS' featuring bold black Arabic numerals from 1 to 12.”
  • “Inner ring displaying red Arabic numerals 13 through 24, with '18' printed within the subsidiary seconds dial.”
  • “Outer perimeter tracks showing individual marginal minutes labeled from 1 to 60 with red numerals every five minutes.”
  • “Double-sunk dial construction with a recessed center disc and a recessed subsidiary seconds register at 6 o'clock.”
  • “Canadian 24 hour arabic numeral, double sunk white enamel dial with marginal minutes”
  • “blued steel Sangamo hands”
  • “Open face gold-toned case with an engraved decorative bow and winding crown situated at the 12 o'clock position.”
  • “Acrylic crystal.”

Reported Movement and Internal Specifications

According to Schmitt Horan & Co., the watch is powered by an Illinois Watch Co. 17-size, 23-jewel movement bearing serial number 4626983. The cataloguer dates the piece to circa 1925 and describes it as a 60-hour stem-wind and lever-set mechanism adjusted to temperature, isochronism, and six positions.

The auction description further states that the movement possesses damascened nickel plates, a lever escapement, a cut bimetallic balance with gold screws, gold jewel settings, a gold wheel train, and a whiplash micrometric regulator. As the movement is enclosed beneath a closed case in the primary observation photograph, these specifications rely on the seller's documentation.

Evidence for this section
  • “Illinois Watch Co., Springfield, Illinois, an early 20th century 60 hour "Sangamo Special" pocket watch, 17 size, 23 jewels, stem wind and lever set, adjusted to 6 positions, temperature and isochronism”
  • “damascened nickel plate movement with lever escapement, cut bimetallic balance with gold screws, gold jewel settings, gold wheel train, and whiplash micrometric regulator”
  • “serial #4626983”
  • “circa 1925”

Reported Condition and Physical Wear

The auction house condition report notes several defects and wear characteristics on the case, dial, and movement. The case exhibits dings, small dents, fine scratches on the outer surface, an acrylic crystal, and a hinge noted as having a flat and lacking one plug, with the winding crown showing excessive lateral movement.

Internally, the cuvette is catalogued with case knife scratches and a circular gouge attributed to barrel jewel screws. The movement plates are described as having fine scratches and pin pricks, scratches on the ratchet wheel, a few specks of oxide on the regulator assembly, and one replaced case screw, while the dial has a few faint hairlines and the hands exhibit minor oxide and finish loss. The auctioneer reports the movement in running order, noting it winds, sets, and ticks.

Evidence for this section
  • “CASE: Dings and small dents; Hinge with flat and lacking one plug; Fine scratches on outer surface of case; Case knife scratches on cuvette; Circular gouge on interior of cuvette from barrel jewel screws; Crown with excessive lateral movement; Acrylic crystal.”
  • “DIAL: A few faint hairlines. HANDS: Minor oxide and loss to blue.”
  • “MOVEMENT PLATES: Fine scratches and pin pricks on plate; Ratchet wheel with scratches; Regulator assembly with a few specks of oxide; One case screw replaced.”
  • “MOVEMENT FUNCTION: Running order (winds, sets and ticks)”

Open research questions

  • What specific metal content or manufacturer hallmarks are stamped on the interior cuvette and case back of the Sangamo Special case?
  • Under physical magnification, what is the extent and location of the reported faint hairlines across the double-sunk enamel dial?
  • Can direct inspection of the movement confirm the reported gold train wheels and replaced case screw?

Source evidence

Recorded claims and source quotations for Illinois Sangamo Special pocket watch
FieldSource-reported valueSource quotation
MakerIllinois Watch Co.“Illinois Watch Co., Springfield, Illinois”
ModelSangamo Special“60 hour "Sangamo Special" pocket watch”
Size and Jewel Count17 size, 23 jewels“17 size, 23 jewels”
Serial Number4626983“serial #4626983”
DialCanadian 24 hour arabic numeral, double sunk white enamel dial“Canadian 24 hour arabic numeral, double sunk white enamel dial with marginal minutes”
Datecirca 1925“circa 1925”
Case StyleHinged back and bezel open face Sangamo Special case“hinged back and bezel open face Sangamo Special case”
Maker LocationSpringfield, Illinois“Illinois Watch Co., Springfield, Illinois”
Lot Number579“Lot 579”

Visible details

  • Open face gold-toned case with an engraved decorative bow and winding crown situated at the 12 o'clock position.
  • White enamel dial signed 'ILLINOIS' featuring bold black Arabic numerals from 1 to 12.
  • Inner ring displaying red Arabic numerals 13 through 24, with '18' printed within the subsidiary seconds dial.
  • Outer perimeter tracks showing individual marginal minutes labeled from 1 to 60 with red numerals every five minutes.
  • Double-sunk dial construction with a recessed center disc and a recessed subsidiary seconds register at 6 o'clock.
  • Blued steel pierced 'Sangamo' style hands.

Research qualifications

  • Internal movement plates, train wheels, and case hallmarks are concealed beneath the closed hinged case and cannot be verified from the photograph.
  • Catalogued mechanical running condition and minor dial hairlines rely solely on the auction house report.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Terms in this record

Glossary explanations for terms named in this object’s record.