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The Encyclopedia of Horology

Pocket watch · Open-face pocket watch

1928 Hamilton Grade 912 12s Pocket Watch

Partially verified

This is a 1928 open-face pocket watch by the Hamilton Watch Company. According to the seller description, it houses a 17-jewel mechanical movement identified as Grade 912, Model 2, in size 12s, with serial number 3286045. The movement is reported to be marked Hamilton Watch Co. Lancaster, PA., Adjusted, and Made in U.S.A. It is fitted in a 44.3 mm round 14K white gold-filled case with engraved decoration. The white dial displays gold-tone Roman numerals, an outer minute track, and a subsidiary seconds subdial at the 6 o'clock position.

Front view of Hamilton open-face pocket watch showing the case, bow, crown, and dial
Front view of Hamilton open-face pocket watch showing the case, bow, crown, and dial — Secondhand Horology. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
secondhandhorology.com
Category
Pocket watch · Open-face pocket watch
Maker / attribution
Hamilton Watch Co.
Reference
Grade 912, Model 2
Catalogue / lot identifier
WA-0751
Source-reported date
1928
Source-reported place
United States
Source-reported serial
3286045

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

Object Identity and Configuration

This is an open-face, manual-wind pocket watch identified by the seller as a 1928 Hamilton, Grade 912, Model 2. The watch is housed in a 44.3 mm round case with engraved decorations and a fluted winding crown located at the 12 o'clock position.

The case is described by the seller as being 14K white gold filled.

Evidence for this section
  • “manual wind pocket watch with an original Hamilton Watch Co. mechanical movement, grade 912, model 2, 12s, adjusted, open face”
  • “cased in a 44.3mm round case with engraved decorations on it, all in 14K white gold filled.”
  • “Case 44.3”

Dial and Hands

The timepiece features a white dial with gold Roman numerals and an outer minute/seconds track. A subsidiary seconds register is positioned at 6 o'clock.

The watch is fitted with matching hands.

Evidence for this section
  • “original white dial with gold Roman Numerals, gold minute/seconds track and matching hands.”
  • “The sub second is located at 6 o'clock position.”

Movement and Case Markings

The movement is reported by the seller to be marked 'Hamilton Watch Co. Lancaster, PA. 17 Jewels Adjusted 912 Made in U.S.A. 3286045'.

The case back is reported to bear the markings 'Hamilton Watch Co. Lancaster, PA. 14K Gold Filled Hadsworth Quality 0219683'.

Evidence for this section
  • “Movement: Hamilton Watch Co. Lancaster, PA. 17 Jewels Adjusted 912 Made in U.S.A. 3286045”
  • “Case Back Markings: Hamilton Watch Co. Lancaster, PA. 14K Gold Filled Hadsworth Quality 0219683”

Open research questions

  • What is the significance of the two conflicting SKU identifiers (WA-0751 and WA-0721) in the source documentation?
  • Can the 1928 date be verified against Hamilton factory records using the serial number 3286045?
  • Is 'Hadsworth Quality' a standard trademark for Hamilton-branded cases, or does it indicate an aftermarket or third-party case supplier?

Source evidence

Recorded claims and source quotations for 1928 Hamilton Grade 912 12s Pocket Watch
FieldSource-reported valueSource quotation
Movement Grade and SizeGrade 912, Model 2, 12s“grade 912, model 2, 12s, adjusted, open face”
Jewel Count17 Jewels“17 Jewels Grade 912”
Movement Serial Number3286045“Movement: Hamilton Watch Co. Lancaster, PA. 17 Jewels Adjusted 912 Made in U.S.A. 3286045”
Case Back MarkingsHamilton Watch Co. Lancaster, PA. 14K Gold Filled Hadsworth Quality 0219683“Case Back Markings: Hamilton Watch Co. Lancaster, PA. 14K Gold Filled Hadsworth Quality 0219683”
Case Diameter44.3 mm“Case 44.3”
Case Thickness10.8 mm“Case Thickness 10.8”
Case Width with Crown51.3 mm“Case with Crown 51.3”

Visible details

  • Open-face pocket watch configuration with a decorative bow and fluted winding crown at the 12 o'clock position
  • White dial featuring applied or metallic Roman numerals and an outer minute track
  • Subsidiary seconds register positioned at 6 o'clock with black calibrations
  • Beaded or milled pattern detailing the bezel edge
  • Openwork spade hands and small counterpoised subsidiary seconds hand

Research qualifications

  • Movement and interior case markings are reported by the source seller but cannot be independently verified from the dial-side photograph
  • The listing includes two distinct SKU identifiers (WA-0751 near the top and WA-0721 at the end)

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

Consulted source

1928 HAMILTON Pocket Watch 17 Jewels Grade 912 U.S.A. Made 12s Engrave – SECOND HAND HOROLOGY

Reviewed 2026-10-21 · Record 9710098160

Terms in this record

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

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