Illinois Bunn Special 60 Hour Mark 163 pocket watch

Technical characteristics

Type

Railroad pocket watch

Dimensions

51mm wide x 15mm deep

Place recorded

United States

Case Specification

14K gold filled, Case Model 28

Maker / attribution

Illinois Watch Co

Winding and Setting

Stem wound / lever set

Movement Inscription

Sixty Hour, Bunn Special, Illinois Watch Co Springfield, Adjusted Temp & Six positions, Motor Barrel, 23 Jewels, 163

Movement Serial Number

5375549

Design

Visible features

• Double-sunk white enamel dial with large black Arabic numerals and outer minute track • Blued steel spade hour hand, whip minute hand, and subsidiary seconds hand • Flared decorative bow situated above a fluted winding crown • Carved patterned rim along the outer circumference of the bezel

Dial and Visible Exterior Construction

Direct visual inspection reveals a double-sunk white enamel dial displaying prominent black Arabic numerals, an outer minute track, and a subsidiary seconds dial recessed at the 6 o'clock position. The dial features blued steel hands including a spade hour hand, a whip minute hand, and a subsidiary seconds hand. The front glass is mounted within a bezel that displays a carved patterned rim around its outer edge. A fluted winding crown is positioned beneath a flared decorative bow with wide shoulders. According to the seller's documentation, the dial is signed “Illinois Bunn Special, 23 Jewel 60 Hours” and fitted with mineral glass, though the dial signature is obscured by the hands in the single provided frontal image.

Case Architecture and Verification Constraints

The seller describes the housing as a 14K gold filled case signed "Illinois Bunn Special, Case Model 28", measuring 51 mm wide by 15 mm deep. The case is catalogued as having a screw-on bezel and back, carved edges, flared shoulders at the bow, and a smooth plain finish across the remainder of the body. Physical verification from the record is constrained by the presence of only a single front photograph. The case back, internal case trademarks, movement engravings, and lever slot beneath the bezel are not shown, leaving the dealer's condition ratings and specific technical designations unverified by direct observation.

Reported Movement and Technical Specifications

Because the movement is not visible in the provided photograph, internal mechanical specifications derive entirely from the seller's listing. The movement is reported to be an open-face, stem-wound and lever-set mechanism built on a nickel three-quarter plate configuration. The vendor states it features a lever escapement, a micrometer regulator, ray damascening, red enamel lettering, gold train wheels, and raised gold jewel settings. The movement is noted by the dealer to bear serial number 5375549 and the signature: “Sixty Hour, Bunn Special, Illinois Watch Co Springfield, Adjusted Temp & Six positions, Motor Barrel, 23 Jewels, 163”. The listing identifies the variant as a 163 Type 1 dating to circa 1929.

Identification

Reference

163 Type 1

Serial number

5375549

Source note

Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.