Hamilton Base Metal Open Face 'Navigation Master' Military Pocket Watch
Record status
Individual type · partial
Period
Circa 1941
According to the auction catalog, this open-face military pocket watch by Hamilton Watch Co. dates to circa 1941 and has a 50.00 mm base metal case. The black dial features white Arabic numerals, an inner chapter ring calibrated to 24 hours, white spade hands, a center sweep seconds hand, and is signed 'G.C.T.' The source reports a stem-wound and set 22-jewel, 3/4 plate nickel movement adjusted to temperature and six positions, numbered 4C3393 and signed for the U.S.
Army Air Corps. The case back is engraved with military specification designations including AN 5740 and manufacturer part number 4992B.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Open-face military pocket watch
- Case diameter
- 50.00 mm
- Place recorded
- United States
- Movement number
- 4C3393
- Dial inscription
- G.C.T.
- Case back engraving
- PART NO. AN 5740 MFR'S PART NO. 4992B SERIAL NO.AF-42-7804 CONTRACT NO. W535o.c-28072 HAMILTON WATCH CO.
- Maker / attribution
- Hamilton Watch Co.
- Inner case back mark
- KEYSTONE BASE METAL 006416
- Movement description
- 22 jewel 3/4 plate nickel movement
Design
- Visible features
- • Black dial featuring central 'G.C.T.' signature • Inner 24-hour chapter ring and outer minute divisions with Arabic numerals at five-minute intervals • White spade hands paired with a thin central sweep seconds hand • Fluted, coin-edged bezel and threaded case rim • Pendant with bow at the 12 o'clock position (above 24 on the dial)
- Case and Military Markings
- The watch is housed in a 50.00 mm base metal case. The inner case back is marked 'KEYSTONE BASE METAL 006416.' The case back is engraved with military identification including 'PART NO. AN 5740', 'MFR'S PART NO. 4992B', 'SERIAL NO.AF-42-7804', 'CONTRACT NO. W535o.c-28072', and 'HAMILTON WATCH CO.'
- Movement Technical Description
- The watch contains a stem-wound and set 22-jewel 3/4 plate nickel movement, adjusted to temperature and six positions. It is signed for 'HAMILTON WATCH CO U.S.A' and 'U.S.ARMY AIR CORPS.' The reported movement number is 4C3393. The internal state of the movement is not visible in the provided imagery.
- Dial and Navigation Configuration
- The watch features a black dial signed 'G.C.T.' The layout includes Arabic numerals at five-minute intervals and an inner chapter ring calibrated to 24 hours. The timepiece uses white spade hands and a center sweep seconds hand. The crystal is set within a fluted, coin-edged bezel, with a pendant and bow located at the 12 o'clock position.
Identification
- Reference
- AN 5740 / 4992B
- Serial number
- AF-42-7804
- 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.
Research required
- Research required: Movement condition and back engravings are catalogued by the source but not visible in the provided photograph