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Orbis Collectibles

Hamilton 4992B Navigator's Watch open-face pocket watch, 1942

UnverifiedInsufficient reliable documentation.

Record status

Individual type · research required

Period

1942

This is an open-face Hamilton 4992B "Navigator's Watch" pocket watch dating to 1942, featuring 22 jewels and a central seconds hand. The 4992B model was used by aviators to aid in navigation.

The watch is housed in a silver case and fitted with a 24-hour dial displaying Arabic numerals. The back of the case bears military contract markings identifying the model, serial number, contract number, and maker.

Evidence at a glance

Linked sources
2
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.

Historical context

The Hamilton Watch Company was founded as an American firm in 1892, maintaining domestic production until 1969 before manufacturing shifted to Switzerland.

Produced in 1942, this open-face pocket watch represents the 4992B model, designated as a navigator's watch. Built to aid aviators in aerial navigation, timepieces of this design fulfilled official service requirements. The military role of the piece is confirmed by contract markings inscribed on the case back, which document its military procurement through the details "AN 5740, MFRS PART No. 49992B, Serial No. AF-42-33996, Contract No. W535 ac-28072, Hamilton Watch Co."

Physical characteristics

Case
Silver, open-face
Dial
24-hour dial with Arabic numerals and central second
Material
Silver (as described on the source photograph page)

Technical characteristics

Movement
22 jewels, Hamilton 4992B
Jewel count
22 jewels (as described by the source)

Design

Case type
Open-face

Identification

Holding institution
SDASM
Inscriptions or signatures
Inscribed on back: "AN 5740, MFRS PART No. 49992B, Serial No. AF-42-33996, Contract No. W535 ac-28072, Hamilton Watch Co."
Serial or inventory number
062525.FIC.003 (Serial No. AF-42-33996)

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

  • Escapement type not documented; requires movement examination or a horological reference.
  • Serial-number dating, case dimensions and weight remain untranscribed.
  • No catalogue reference number is asserted; standard horological catalogues have not been transcribed for this specimen.
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