Heuer Bundeswehr Flyback Chronograph, Ref. 1550 SG
Record status
Individual type · partial
Period
circa 1972
This military flyback chronograph by Heuer, reference 1550 SG, is dated circa 1972 by the auction house. Identified with case number 5780, it features a 43 mm steel case fitted with a bidirectional rotating bezel graduated with a 60-minute scale.
The catalog reports a screw-down caseback engraved with Bundeswehr military markings, including stock number 6645-12-146-3774. The black dial presents Arabic numerals, tritium-luminous elements, and two subsidiary counters. The watch is powered by a manual-winding Valjoux calibre 230 flyback movement and is mounted on a black bund-style strap.
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
- Military flyback chronograph
- Calibre
- Valjoux 230
- Diameter
- 43 mm
- Reference
- 1550 SG
- Case Number
- 5780
- Movement Type
- Manual-winding
- Place recorded
- Switzerland
- Military Engraving
- BUNDESWEHR 6645-12-146-3774
- Maker / attribution
- Heuer
Design
- Visible features
- • Bi-compax chronograph layout with sub-dials at 3 and 9 o'clock • Bidirectional black bezel with silver triangle and minute numerals • Heuer shield logo below the 12 o'clock numeral • Mounted on a black leather bund-style strap
- Dial and Mechanism
- The black dial includes tritium-luminous numerals and hands. The watch is driven by a manual-winding Valjoux 230 movement. The auction house reports the movement to be in working order, with a cleaning recommended.
- Construction and Exterior
- The watch features a 43 mm steel case with a bidirectional rotating bezel calibrated with a 60-minute scale. The dial displays a bi-compax layout with subsidiary counters positioned at the 3 and 9 o'clock marks, and a Heuer shield logo beneath the 12 o'clock position. The timepiece is presented on a leather bund-style strap. The screw-down case back is reported to bear a military engraving featuring the stock number 6645-12-146-3774.
- Documentation and Attribution
- The watch is identified as reference 1550 SG with case number 5780, attributed by the source to circa 1972. The source describes the item as a military flyback chronograph associated with the Bundesluftwaffe. The provided source material is a translation from a German catalogue. Physical inspection of the internal movement and the case back markings was not performed as part of this review.
Identification
- Reference
- 1550 SG
- Serial number
- 5780
- 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 back engraving and movement are not shown in the provided photograph
- Research required: Auction text is translated via DeepL from an original catalogue entry