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The Encyclopedia of Horology

Pocket watch · Hunter case pocket watch

Rockford Grade 330 12-Size Hunter Case Pocket Watch

Partially verified

This is an American hunter case pocket watch produced by the Rockford Watch Co., dated to circa 1913 based on movement serial number 899491 reported by the source. The watch is powered by a size 12s, Grade 330, Model 1 manual-winding mechanical movement equipped with 17 jewels and a double roller. It is housed in a yellow gold-filled hunter case measuring 46.8 mm in diameter, featuring an engraved finish and a cuvette marked Dueber Warranted 20 Years. The white enamel dial is configured with black Arabic numerals, an outer black and red five-minute track, blued steel hands, and a subsidiary seconds dial at 6 o'clock.

Front view of Rockford 12s hunter pocket watch with front cover open showing dial and hands
Front view of Rockford 12s hunter pocket watch with front cover open showing dial and hands — Second Hand Horology. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
secondhandhorology.com
Category
Pocket watch · Hunter case pocket watch
Maker / attribution
Rockford Watch Co.
Reference
WA-4403
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1913
Country
United States
Source-reported serial
899491

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 Configuration

The timepiece features a white enamel dial with black Arabic numerals and the Rockford brand signature in script placed beneath the 12 o'clock position. The dial perimeter includes a black minute track supplemented by red five-minute interval markers. A subsidiary seconds dial with a blued steel hand is positioned at 6 o'clock.

The winding crown and bow are located at 3 o'clock, corresponding to the hunter case arrangement. The vendor listing includes an internal discrepancy, noting "Roman numerals" in the tabular specifications despite describing black Arabic numerals in the text overview and displaying Arabic numerals in the accompanying dial photograph.

Evidence for this section
  • “Front cover opened revealing a white dial with black Arabic numerals and Rockford signature in script below 12 o'clock.”
  • “Red five-minute interval markers printed along the perimeter of the minute track.”
  • “Subsidiary seconds dial located at 6 o'clock with blued steel sub-seconds hand.”
  • “Winding crown and bow positioned at 3 o'clock corresponding to the hunter case configuration.”
  • “Features: Roman numerals, minute track, small-seconds”

Case Construction

The watch is housed in an engraved round hunter case described by the seller as 10K yellow gold-filled with a protective front cover and an inner dust cuvette. Dimensional data reported by the listing records a case diameter of 46.8 mm, a diameter including the crown of 58.7 mm, and a case thickness of 10.6 mm.

The case back markings are reported by the vendor as "Dueber Warranted 20 Years 971300A", indicating manufacture by Dueber. Because the case back interior and cuvette are not visible in the provided image, these markings and metal specifications remain source-reported.

Evidence for this section
  • “Housed in a 47mm round 10K yellow gold-filled hunter case with double hinged case back (double cuvette), featuring a protective front cover, and an inner dust cover.”
  • “Case Size: 46.8”
  • “Case Diameter w/Crown: 58.7”
  • “Case Thickness: 10.6”
  • “Case Back Markings: Dueber Warranted 20 Years 971300A”

Movement Details and Source Attribution

According to the source listing, the watch is powered by a Rockford Watch Co. manual-winding mechanical movement designated as Grade 330, Model 1, in a size 12s layout. The movement is documented as having 17 jewels, a double roller escapement, and crown-set operation via the pendant.

The listing dates the watch to 1913 based on reported movement serial number 899491. Because the movement plates are fully enclosed within the hunter case in the provided photograph, these caliber specifications, serial markings, and dating attributions are vendor-reported rather than independently visible.

Evidence for this section
  • “This is a vintage Rockford pocket watch, dating from 1913 based on the serial number.”
  • “mechanical movement, grade 330, featuring 17 jewels, model 1, size 12s, sub-second hand, and made in U.S.A.”
  • “Size 12s Model 1 Double Roller Movement SN 899491 SERVICED”
  • “Crown: Crown-set (pendant)”

Open research questions

  • Does inspection of the movement plates confirm the reported serial number 899491, Grade 330 designation, and 17-jewel count?
  • What specific trademark stamps or serial digits are struck on the Dueber case cuvette alongside 'Warranted 20 Years'?
  • Is the reported acrylic crystal a modern replacement for an original mineral glass crystal?

Source evidence

Recorded claims and source quotations for Rockford Grade 330 12-Size Hunter Case Pocket Watch
FieldSource-reported valueSource quotation
Movement GradeGrade 330“Caliber: Grade 330”
Movement Serial Number899491“Movement SN 899491”
Jewel Count17 Jewels“Jewels: 17”
Case Size46.8 mm“Case Size: 46.8”
Case Back MarkingsDueber Warranted 20 Years 971300A“Case Back Markings: Dueber Warranted 20 Years 971300A”
Case Thickness10.6 mm“Case Thickness: 10.6”
Case Diameter with Crown58.7 mm“Case Diameter w/Crown: 58.7”
Reported Crystal MaterialAcrylic“Crystal: Acrylic”
Escapement TypeDouble Roller“Double Roller”

Visible details

  • Front cover opened revealing a white dial with black Arabic numerals and Rockford signature in script below 12 o'clock.
  • Winding crown and bow positioned at 3 o'clock corresponding to the hunter case configuration.
  • Subsidiary seconds dial located at 6 o'clock with blued steel sub-seconds hand.
  • Red five-minute interval markers printed along the perimeter of the minute track.

Research qualifications

  • The listing contains a minor internal discrepancy, listing 'Roman numerals' in dial features while the description and photographs confirm Arabic numerals.
  • Movement plates and cuvette interior markings are source-reported and not visible in the supplied photograph.

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

Consulted source

1913 ROCKFORD Pocket Watch 12s Hunter Case 17 Jewels Grade 330 10K G.F – SECOND HAND HOROLOGY

Reviewed 2026-10-21 · Record 3c176d6d06

Terms in this record

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

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