Skip to content
The Encyclopedia of Horology

Pocket watch · Open-face pocket watch

Hamilton 940 Box Hinge Pocket Watch

Partially verified

This open-face pocket watch is reported by the dealer to be an 18-size, 21-jewel railroad grade timepiece produced by Hamilton Watch Co circa 1903. According to source details, the watch houses a nickel full-plate movement numbered 232598 equipped with a lever escapement, micrometer regulator, raised gold jewel settings, and damascened finishing. The yellow-gold-toned case features large box hinges, chased scrollwork, and floral engraving around the bezel and edges. The visible dial is double-sunk white enamel signed 'Hamilton Watch Co.', displaying black Arabic numerals, blued steel hands, a subsidiary seconds track, and outer red five-minute markers under mineral glass.

Front view of the open-face pocket watch showing the enamel dial, blued hands, and engraved box-hinge case
Front view of the open-face pocket watch showing the enamel dial, blued hands, and engraved box-hinge case — Atlam Watches. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.antiquesboutique.com
Category
Pocket watch · Open-face pocket watch
Maker / attribution
Hamilton Watch Co
Reference
940
Catalogue / lot identifier
AB-107617
Source-reported date
circa 1903
Country
United States
Source-reported serial
232598

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 "Hamilton Watch Co" in script under the 12 o'clock position. The primary time chapter features bold black Arabic hour numerals, paired with an outer track showing red Arabic five-minute numbers alongside black minute tick marks. A recessed subsidiary seconds dial is positioned at 6 o'clock, and the dial features blued steel spade hands with openwork detailing beneath a mineral glass crystal.

Visual observation of the exterior shows an ornate yellow-gold-toned case decorated with chased foliate and scroll detailing around the bezel and edge. A prominent box hinge is visible along the rim at the 6 o'clock position, paired with a rounded pendant, a fluted onion-style crown, and a contrasting dark-toned, un-gilded bow.

Evidence for this section
  • “White enamel dial signed 'Hamilton Watch Co.' in script, with bold black Arabic hour numerals and a subsidiary seconds dial at 6 o'clock.”
  • “Perimeter track displays red Arabic five-minute numbers alongside black minute tick marks.”
  • “Blued steel spade hands with openwork details.”
  • “Prominent box hinge visible at the bottom rim (6 o'clock position).”
  • “The watch has a mineral glass”

Case Construction and Physical Measurements

According to the dealer's listing, the watch is housed in an open-face, gold-plated case measuring 54 mm in width by 18 mm in depth. The housing is designed with large box hinges as well as a hinged back and bezel, with exterior chased sides and floral engraving.

The seller notes that the case body retains its gold-plated exterior, while the bow has experienced finish loss and is described as having lost its gilding, matching the darker appearance seen on the exterior bow.

Evidence for this section
  • “gold plated open face which has a hinged back and bezel and large box hinges”
  • “measures 54mm wide x 18mm deep”
  • “the bow has lost its gilding”
  • “The case is decorated with chased sides and floral engraving.”

Reported Movement and Operating Mechanism

The internal mechanism is not visible in the provided primary photograph, so all mechanical details reflect dealer descriptions rather than direct photographic verification. The listing identifies the watch as an 18-size, stem-wound and lever-set timepiece made by Hamilton circa 1903, categorized as a 21-jewel railroad grade pocket watch.

The nickel full-plate movement is reported to feature a lever escapement, micrometer regulator, raised gold jewel settings, and damascened finishing. It is catalogued as bearing the movement inscription “Hamilton Watch Co, Lancaster, Pa, 21 Jewels, Adjusted” under movement serial number 232598.

Evidence for this section
  • “18s size 21 jewel Railroad grade pocket watch made by Hamilton circa 1903”
  • “The watch is stem wound / lever set”
  • “nickel full plate movement has a lever escapement with a micrometer regulator, raised gold jewel settings and is decorated with damascening”
  • “signed “Hamilton Watch Co, Lancaster, Pa, 21 Jewels, Adjusted” # 232598”

Open research questions

  • What specific case maker hallmarks, serial numbers, or gold-fill warranty stamps are struck inside the hinged case back and cuvette?
  • Can direct visual inspection of movement 232598 verify the damascene pattern and whether the adjustment stamp specifies temperature and positions?
  • Does metallurgical or physical inspection indicate whether the bow is the original un-gilded base metal component or a later un-plated replacement?

Source evidence

Recorded claims and source quotations for Hamilton 940 Box Hinge Pocket Watch
FieldSource-reported valueSource quotation
Movement Serial232598“# 232598”
Jewel Count21 Jewels“21 jewel Railroad grade pocket watch”
Size18s“18s size”
Winding/SettingStem wound / lever set“The watch is stem wound / lever set”
Dimensions54mm wide x 18mm deep“measures 54mm wide x 18mm deep”
Dial MaterialWhite enamel double sunk“white enamel double sunk dial”
Movement InscriptionHamilton Watch Co, Lancaster, Pa, 21 Jewels, Adjusted # 232598“signed “Hamilton Watch Co, Lancaster, Pa, 21 Jewels, Adjusted” # 232598”
Case ConstructionGold plated open face with hinged back and bezel“gold plated open face which has a hinged back and bezel and large box hinges”

Visible details

  • White enamel dial signed 'Hamilton Watch Co.' in script, with bold black Arabic hour numerals and a subsidiary seconds dial at 6 o'clock.
  • Perimeter track displays red Arabic five-minute numbers alongside black minute tick marks.
  • Blued steel spade hands with openwork details.
  • Gold-toned case with heavily chased, ornate foliate decoration along the bezel and rim.
  • Prominent box hinge visible at the bottom rim (6 o'clock position).
  • Fluted onion-style crown and round pendant in gold tone, paired with a dark-toned, un-gilded bow.

Research qualifications

  • The internal movement (serial 232598, jewel count, and damascening) is described in the dealer listing but not visible in the provided image.
  • The bow shows finish loss compared to the gold-plated case body, as noted by the dealer.

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

Consulted source

Superb BOX HINGE cased Hamilton 940 pocket watch c1903 in Antique Mens Watches

Reviewed 2026-10-21 · Record 72e7da9b04

Terms in this record

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