Longines Royal Navy Hydrographic Service H.S.3 Deck Watch
Record status
Individual type · partial
Period
1940s (Approx)
Maker / issuer
LonginesThis military pocket deck watch by Longines is reported by the seller to have been issued for the British Royal Navy Hydrographic Service, bearing caseback markings for code H.S.3 along with the broad arrow.
Housed in a 52 mm nickel-chrome plated case with a screw-in bezel and screw-down caseback, the watch features a white enamel dial with black Arabic numerals and blued steel hands. It is powered by a manual-wind Longines calibre 19.70N gilt mechanical movement with 16 jewels.
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
- Dial
- White Enamel
- Type
- Deck watch
- Calibre
- 19.70N
- Case Width
- 52mm
- Jewel Count
- 16
- Case Material
- Nickel Chrome
- Place recorded
- Switzerland
- Military Markings
- HS /I\ 3
- Maker / attribution
- Longines
- Inside Caseback Inscription
- Longines 22684 160
Design
- Visible features
- • Gilt movement bridge is engraved 'LONGINES SWISS MADE 16 JEWELS 6686016'. • Calibre designation '19.70N' is stamped on the plate adjacent to the balance wheel. • Movement features a screw-compensated balance wheel, index regulator, and blued screws. • Nickel-chrome plated outer case rim displays fine surface wear.
- Mechanism and Construction
- The watch utilizes a manual-wind Longines calibre 19.70N movement. The movement bridge is engraved with 'LONGINES SWISS MADE 16 JEWELS 6686016', with the calibre designation stamped on the plate near the balance wheel. The movement features a screw-compensated balance wheel, index regulator, and blued screws. The watch is housed in a 52 mm nickel-chrome plated case with a screw-in bezel and screw-down caseback.
- Dial and External Observations
- The watch features a white enamel dial with black Arabic numerals and an outer track calibrated to half-second increments. It is fitted with blued steel leaf and sword hands. The nickel-chrome plated outer case rim displays fine surface wear, consistent with the seller's report of age.
- Identity and Military Specification
- The item is described as a Longines deck watch. The seller states the piece is marked for the British Royal Navy Hydrographic Service, bearing the 'H.S.3' code and the British Government Broad Arrow on the caseback. The source describes the 'H.S.3' code as a designation used by the Royal Navy between 1939 and 1946 to indicate a deck watch adjusted for isochronism and performance in at least two positions.
Identification
- Serial number
- 6686016
- 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: Case exterior markings, military broad arrow, and inner caseback inscriptions described in the source are not visible in the movement photograph.
- Research required: Dial condition and configuration cannot be verified from the single provided movement photograph.