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The Encyclopedia of Horology

Wristwatch · Flyback chronograph wristwatch

Longines Flyback Chronograph Wristwatch, Ref. 5415

Partially verified

This reference 5415 stainless steel chronograph wristwatch by Longines is powered by the manual-wind Calibre 13ZN, an in-house movement equipped with a flyback chronograph mechanism. According to the auction catalogue, the watch was manufactured in 1948 and sold on 7 June 1948 to Longines-Wittnauer, the brand's agent in the United States. The dial features a two-tone silvered sector layout with Arabic numerals, an outer tachymeter scale, a subsidiary continuous seconds counter at 9 o'clock, and a 30-minute register at 3 o'clock, presented on an unbranded brown leather strap.

Longines reference 5415 flyback chronograph wristwatch with two-tone silvered sector dial and stainless steel case.
Longines reference 5415 flyback chronograph wristwatch with two-tone silvered sector dial and stainless steel case. — Christie's. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
onlineonly.christies.com
Category
Wristwatch · Flyback chronograph wristwatch
Maker / attribution
Longines
Reference
5415
Catalogue / lot identifier
279
Source-reported date
1948
Country
Switzerland
Source-reported serial
7'371'916

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and External Construction

The watch is housed in a stainless steel case measuring 37.5 mm in diameter. The exterior condition is described as having scratches and dents on the case sides and case back, with additional dents present on the bezel.

A marking, '284', is engraved on the back of a lug. The watch is provided with an unsigned, non-branded strap; the original strap is not included.

Evidence for this section
  • “CASE DIAMETER: 37.5 mm.”
  • “Case: With scratches and dents. Dents on the bezel. Case back with scratches and dents. Scratches on the sides.”
  • “Number 284 engraved on the back of a lug.”
  • “The watch is sold and delivered with a non-branded strap, the original strap is not included in the sale.”

Dial Configuration

The watch features a two-tone silvered sector dial. While the dial is noted as being in good condition, marks and dust are visible upon inspection.

The dial displays Arabic numerals and includes an outer tachymeter scale. It is configured with two subsidiary registers at the 3 and 9 o'clock positions.

Evidence for this section
  • “DIAL: Two-tone silvered sector”
  • “Dial: Good. Some marks and dust visible.”
  • “Two-tone silvered sector dial with black Arabic numerals and two subsidiary counters at 3 and 9 o'clock.”
  • “Outer tachymeter scale calibrated to Base 60 1000m running along the dial periphery.”

Mechanism and Provenance

The watch is powered by a manual-wind Calibre 13ZN movement. At the time of cataloguing, the movement was recorded as ticking with all functions working, though a service is recommended.

According to the source, the watch was manufactured in 1948 and sold to Longines-Wittnauer, the brand's agent in the USA, on 7 June 1948.

Evidence for this section
  • “MOVEMENT: Manual, Cal. 13ZN”
  • “The movement is ticking at the time of cataloguing and all functions are working; however, a service is recommended.”
  • “MANUFACTURED IN: 1948”
  • “The present watch was produced in stainless steel and with calibre 13ZN, and was sold to Longines-Wittnauer , their agent for the USA at the time, on 7 June 1948.”

Open research questions

  • What is the significance of the secondary number '284' engraved on the lug?
  • Can the manufacture date and initial sale records be independently verified via Longines archival extracts?

Source evidence

Recorded claims and source quotations for Longines Flyback Chronograph Wristwatch, Ref. 5415
FieldSource-reported valueSource quotation
Reference Number5415“REF. 5415”
Case Numbers23'432 & 284“CASE NO: 23'432 & 284”
Movement Number7'371'916“MOVEMENT NO: 7'371'916”
Manufacture Date1948“MANUFACTURED IN: 1948”
Case Diameter37.5 mm“CASE DIAMETER: 37.5 mm.”
Movement CalibreCal. 13ZN“MOVEMENT: Manual, Cal. 13ZN”
DialTwo-tone silvered sector“DIAL: Two-tone silvered sector”
ProvenanceChristie's Geneva, 16 May 2016, lot 222“Provenance Christie's Geneva, Rare Watches Including Important Private Collections, 16 May 2016, lot 222 (sold for 40'000 CHF all in.)”
Case and Movement NumbersCase 23'432 & 284; Movement 7'371'916“CASE NO: 23'432 & 284, MOVEMENT NO: 7'371'916”

Visible details

  • Two-tone silvered sector dial with black Arabic numerals and two subsidiary counters at 3 and 9 o'clock.
  • Outer tachymeter scale calibrated to Base 60 1000m running along the dial periphery.
  • Blued steel central hands and chronograph register hands.
  • Round pushers at 2 and 4 o'clock flanking a ribbed crown.
  • Tan-brown leather strap with contrast stitching and stainless steel buckle.

Research qualifications

  • Movement and case numbers are reported by the source and cannot be verified from the single dial-side photograph.
  • The watch is fitted with an unbranded replacement strap; the original strap is not included.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

LONGINES, RARE STAINLESS STEEL FLYBACK CHRONOGRAPH WRISTWATCH, WITH TWO-TONE SILVERED SECTOR DIAL, REF. 5415, CASE NO: 23'432 & 284, MOVEMENT NO: 7'371'916 | Christie’s

Reviewed 2026-10-25 · Record 71e0dab836

Terms in this record

Glossary explanations for terms named in this object’s record.

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