Hamilton Model 21 Two-Day Marine Chronometer
Record status
Individual type · partial
Period
1941
Maker / issuer
Hamilton Watch CompanyThis Hamilton Watch Company Model 21 two-day marine chronometer is housed in a brass-bound mahogany three-tier gimbaled box with reinforced brass corners, side drop carrying handles, and a glazed viewing lid.
The silvered dial features Arabic numeral hour markers, an up/down power reserve register at 12 o'clock, and a subsidiary seconds dial. Source reports indicate the dial is signed Hamilton, Lancaster, Pa., U.S.A., bearing serial number N2738 and dated 1941. The chronometer is reported to contain a 14-jewel chain fusee movement and retains a winding key.
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
- Date
- 1941
- Type
- Two-day marine chronometer
- Model
- Model 21
- Jewels
- 14 jewels
- Dimensions
- 7.25 X 7.5 X 7.5 in.
- Serial Number
- N2738
- Place recorded
- United States
- Maker / attribution
- Hamilton Watch Company
Design
- Visible features
- • The chronometer is gimbal-mounted in a brass bowl and ring within a brass-reinforced wooden case. • A brass key is inserted in the lower front lock escutcheon. • A folding brass carrying handle is mounted to the side of the wooden case. • The open upper lid retains a rectangular glazed viewing panel and an interior brass latch plate.
- Dial and Identity Markings
- The instrument is reported to feature a silvered dial displaying Arabic numerals, an up/down power reserve indicator at 12 o'clock, and a subsidiary seconds dial. According to the auction catalogue, the dial is signed 'Hamilton, Lancaster, Pa., U.S.A.' alongside the serial number N2738 and dated 1941. External markings noted in the lot description state that 'the front of the case bears the original Hamilton Watch Company brass nameplate.' Direct visual observation records that a brass key is inserted in the lower front lock escutcheon of the wooden case.
- Case Construction and Gimbal Mounting
- Visual observation confirms that the chronometer is gimbal-mounted in a brass bowl and ring within a brass-reinforced wooden case. The case features a folding brass carrying handle mounted to its side, and the open upper lid retains a rectangular glazed viewing panel and an interior brass latch plate. The source describes the housing as a 'brass-bound mahogany three-tier gimbaled case with brass corner mounts, inset brass carrying handles, locking lid, and glazed viewing panel.' Recorded dimensions for the case are 7.25 by 7.5 by 7.5 inches.
- Movement Specifications and Reported Condition
- The source description states that the instrument 'features a precision 14-jewel chain fusee movement and was produced for marine navigation and military service during World War II.' The chronometer is also noted as retaining its winding key. Because the mechanism is housed inside the gimbaled bowl, the internal movement components are not visible in the photograph. The auction catalogue characterizes the lot as being in 'good overall condition with typical age-related surface wear' and explicitly notes that the 'movement has not been tested for accuracy.'
Identification
- Reference
- Model 21
- Serial number
- N2738
- 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: The internal 14-jewel chain fusee movement is not visible in the photograph.
- Research required: Source reports the movement has not been tested for operational accuracy.