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The Encyclopedia of Horology

Pocket watch · Hunter case pocket watch

E. Howard Watch Co. 16s Grade Series 3 Pocket Watch

Partially verified

This antique size 16s hunter case pocket watch was manufactured by the E. Howard Watch Co. and is dated by the seller to circa 1906. The timepiece is driven by a manual-wind Model 1905, Grade Series 3 movement, which the source reports features 17 jewels and factory adjustments to three positions, temperature, and isochronism. It is mounted in a 49.5 mm yellow gold-filled hunter case marked by Keystone Watch Case with serial 8194505. The nickel movement plates are inscribed 'E. Howard Watch Co. Boston U.S.A.', 'ADJUSTED', and display movement serial number 925607.

Movement view of the E. Howard Watch Co. Grade Series 3 pocket watch in open gold-filled hunter case
Movement view of the E. Howard Watch Co. Grade Series 3 pocket watch in open gold-filled hunter case — 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
E. Howard Watch Co.
Reference
WA-6535
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 1906
Country
United States
Source-reported serial
925607

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

Observed Movement Architecture and Inscriptions

Direct observation of the open case reveals a nickel-finished manual movement within a hinged gold-tone case frame. The movement bridge is engraved in script reading 'E. Howard Watch Co. Boston U.S.A.', alongside engraved markings for '925607', 'ADJUSTED', and '17 JEWELS'.

The movement assembly incorporates a balance wheel and a regulator arm indicating toward a marked 'F/S' scale. In the photograph, the winding crown and bow are located at the 3 o'clock position while resting on an acrylic display prop.

Evidence for this section
  • “Movement bridge engraved in script: 'E. Howard Watch Co. Boston U.S.A.'”
  • “Engraved notations reading '925607', 'ADJUSTED', and '17 JEWELS'”
  • “Balance wheel assembly with regulator arm indicating toward F/S scale”
  • “Winding crown and bow positioned at the 3 o'clock orientation on a transparent acrylic display stand”

Case Construction and Dimensions

The timepiece is housed in a yellow gold-filled hunter case. Per the vendor listing, the case dimensions measure 49.5 mm in diameter, 61.5 mm across including the winding crown, and 12.5 mm in total thickness.

The seller describes the case back structure as a 'Double hinged case back (double cuvette)' incorporating an inner dust cover. Case markings are listed in the source as engraved with 'Keystone Watch Case 8194505'.

Evidence for this section
  • “Case Size: 49.5”
  • “Case Diameter w/Crown: 61.5”
  • “Case Thickness: 12.5”
  • “Caseback: Double hinged case back (double cuvette)”
  • “Keystone Watch Case 8194505”

Reported Specifications and Unverified Features

The dial side is facing away and not visible in the provided reference photograph. According to the seller's product description, the front features a 'white enamel dial with bold black Roman numerals with a black railroad minute track, blue steel hands and a small seconds sub-dial at 6 o’clock'.

The seller catalogues the watch as 'dating to circa 1906' and identifies the movement as size 16s, 'Model 1905', with an asserted 'Run Quantity 6,000' and 'Grade/Model Total Production 49,390', reportedly adjusted to 'three (3) positions, temperature, and isochronism'.

Evidence for this section
  • “white enamel dial with bold black Roman numerals with a black railroad minute track, blue steel hands and a small seconds sub-dial at 6 o’clock”
  • “dating to circa 1906”
  • “Run Quantity 6,000”
  • “Grade/Model Total Production 49,390”
  • “Adjusted to three (3) positions, temperature, and isochronism”

Open research questions

  • Does direct visual inspection of the dial confirm the vendor's report of a white enamel dial with black Roman numerals and blued steel hands?
  • What specific external engraving or engine-turning pattern is present on the front and rear covers of the hunter case?
  • Are the serial number 925607 and Model 1905 classification corroborated by historical Keystone/E. Howard production records for 1906?

Source evidence

Recorded claims and source quotations for E. Howard Watch Co. 16s Grade Series 3 Pocket Watch
FieldSource-reported valueSource quotation
Movement Serial925607“Movement SN 925607”
Case Size49.5 mm“Case Size: 49.5”
Caliber/GradeSeries 3“grade Series 3, featuring 17 jewels, size 16s, model 1905”
Case Maker MarkKeystone Watch Case 8194505“Keystone Watch Case 8194505”
AdjustmentsThree positions, temperature, and isochronism“Adjusted to three (3) positions, temperature, and isochronism”
Case Diameter with Crown61.5 mm“Case Diameter w/Crown: 61.5”
Model DesignationModel 1905“Model 1905”
Reported Production Run Quantity6,000“Run Quantity 6,000”

Visible details

  • Hinged gold-tone case back opened to reveal a nickel-finished movement and interior cuvette mirror reflection
  • Movement bridge engraved in script: 'E. Howard Watch Co. Boston U.S.A.'
  • Engraved notations reading '925607', 'ADJUSTED', and '17 JEWELS'
  • Balance wheel assembly with regulator arm indicating toward F/S scale
  • Winding crown and bow positioned at the 3 o'clock orientation on a transparent acrylic display stand

Research qualifications

  • The dial and outer case decoration are obscured or facing away in the provided image
  • Display stand visible in the image is a prop and not part of the watch

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

Consulted source

1906 E. Howard Watch Co. Pocket Watch 16s Grade Series 3 17 Jewels GF – SECOND HAND HOROLOGY

Reviewed 2026-10-21 · Record 488f1a6193

Terms in this record

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

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