Longines Ref. 5161 'Sommatore' Flyback Chronograph Wristwatch
Record status
Individual type · partial
Period
circa 1946
Maker / issuer
LonginesThis lot features a Longines reference 5161 stainless steel manual-wind flyback chronograph wristwatch, nicknamed 'Sommatore' or 'Doppia Lancetta', dating to circa 1946.
It is powered by the 18-jewel Longines calibre 13ZN-12, notable for its central minute recorder operating in synchrony with the central chronograph seconds hand. The 39.5 mm round case features rectangular pushers, a snap-on back, and is attached to a textured black leather strap. The silvered dial displays painted Arabic numerals, an outer tachymeter and minute track, a running seconds subsidiary dial at 9 o'clock, and a 12-hour subdial counter at 3 o'clock.
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
- Flyback chronograph wristwatch
- Calibre
- 13ZN-12
- Reference
- 5161
- Order Number
- 23021
- Case Diameter
- 39.5 mm
- Delivery Year
- 1946
- Place recorded
- Switzerland
- Maker / attribution
- Longines
Design
- Visible features
- • Silvered dial with two sub-dials situated at 3 and 9 o'clock • Four central hands including blued chronograph seconds and polished steel chronograph minutes • Fitted to a textured black leather strap with black stitching
- Dial Configuration
- The silvered dial includes an outer tachymeter and minute track, with painted Arabic numerals. Timekeeping and timing functions are managed via subsidiary seconds at 9 o'clock, a 12-hour counter at 3 o'clock, and central chronograph hands. The latter consist of a blued central chronograph seconds hand and a polished steel central chronograph minute recorder. The condition report notes that the dial was refreshed during service but specifies it was not reprinted.
- Movement and Specifications
- The watch is powered by an 18-jewel manual-wind Longines calibre 13ZN-12. This movement features a flyback chronograph mechanism with a central minute recorder. The calibre and case are signed. The movement was serviced by Longines in April 2025. It was recorded as running at the time of cataloguing, though the auction source notes it was not tested for accuracy.
- Case and External Architecture
- The reference 5161 is constructed with a 39.5 mm stainless steel round case, featuring a snap-on case back. Inner case back markings are identified as EFCo Longines with reference 5161 and order number 23021. The watch is fitted with a black leather strap and the original Longines pin buckle. Condition reports describe the case as having sharp lugs with light surface wear.
Identification
- Reference
- 5161
- 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: Condition report notes the dial was refreshed during service, though not reprinted
- Research required: Movement and inner case back are not shown in the provided photograph