The Basics
The Longines Twenty-Four Hours is fitted with calibre L704.3, a self-winding movement whereby the hands make one full circle of the dial in 24 hours. The stainless steel case has a diameter of 47.50 mm; the dial is matt black with 24 white Arabic numerals coated with Super-LumiNova and has a railway-track minute circle. The time is indicated by hands coated with Super-LumiNova and the watch has a centre seconds hand, all for ease of use, like the original model. There is a date aperture at 3 o’clock. A sapphire glass covers the dial and this timepiece also has a transparent caseback, with its own cover, which reveals the delicate details of the movement. The Longines Twenty-Four Hours is mounted on a black alligator strap and is water-resistant to 3 bar (30 meters). The Longines Twenty-Four Hours watch has a transparent caseback, with its own cover, which reveals the delicate details of the movement. The inside surface of the cover is engraved with the words “Re-edition of a Longines navigation watch exclusively made for Swissair navigators, 1953-1956“ plus the watch number. The Longines watch for Swissair navigators had been specifically manufactured for the Swiss national airline by Longines in the early 1950’s. It is fitted with a Longines calibre 37.9N with a centre seconds hand, which had been designed in the 1940s and used in Longines watches intended for pilots. The back cover of the steel case of the watch is engraved with the Swissair brand-name. Longines’ archives reveal that it was one of a series of 70 pieces manufactured between 1953 and 1956 exclusively for the Swiss national airline.
| Brand: | Longines |
| Family: | Heritage |
| Reference: | L2.751.4.53.4 (aka: L27514534) |
| Name: | Twenty-Fours Hours |
| Produced: | N/A |
| Limited: | No |
Below is a detailed look at Longines’s model L2.751.4.53.4 from Heritage watch family, including the price, case details and movement features.
The Details
Longines’s Twenty-Fours Hours (L2.751.4.53.4 (aka: L27514534)) was originally released in N/A. This watch features a automatic movement beating at a frequency of 28800 bph ( 4 Hz) to provide a 46-hour power reserve when fully wound.
The Case
The stainless steel case measures 47.5mm in diameter and roughly mm thick. The round case is paired with a black color dial with poire-shaped hands, and a arabic numerals hour markers and minute track, covered by a sapphire glass. Longines’s Heritage model L2.751.4.53.4 is water resistant up to 30 meters (98 ft). A hunter caseback is over the back of the watch case.
| Material: | Stainless steel |
| Glass: | Sapphire |
| Back: | Hunter |
| Shape: | Round |
| Diameter: | 47.5mm |
| Height: | mm |
| Lug Width: | N/Amm |
| W/R: | 30 |
Case Diameter
Case Thickness
Lug Width
Water Resistance
The Movement
The Heritage L2.751.4.53.4 movement is a powered by caliber L704.3 made by Longines. The 24-jewel automatic movement is 36.6mm in diameter. Its balance wheel oscillates at 28,800 semi-oscillations per hour or 4 Hz. This movement offers a 46-hour power reserve.
| Type: | Automatic |
| Brand: | Longines |
| Caliber: | L704.3 |
| Base: | ETA A07.171 |
| Display: | Analog |
| Diameter: | 36.6mm |
| Jewels: | 24 |
| Reserve: | 46 hours |
| Frequency: | 28800 bph |
| Time: | Minutes, Seconds, Additional 24 Hour Hand (fixed) |
| Chronograph: | |
| Additionals: |
The Price
How much does the Longines’s Heritage L2.751.4.53.4 cost? This watch was introduced in N/A and has been in Longines’s collection for around . This watch is not a limited release. As with most luxury watches, the price of depends on the availability and demand.
CURRENT PRICE: $2,800
For more information, visit Longines online.
Specifications:
- Brand: Longines
- Model: Twenty-Fours Hours
- Reference Number: L2.751.4.53.4 (aka: L27514534)
- Limited: No
Case & Dial:
- Material: Stainless steel
- Glass: Sapphire
- Back: Hunter
- Diameter: 47.5
- Thickness:
- Lug Width: N/A
- Dial Color: Black
- Indexes: Arabic Numerals and Poire-shaped hands
- Water Resistance: 30 meters
Movement:
- Winding: Automatic
- Brand: Longines
- Caliber: L704.3
- Display: Analog
- Diameter: 36.6mm
- Jewels: 24
- Power Reserve: 46 hours
- Frequency: 28800 bph
- Functions: Minutes, Seconds, Additional 24 Hour Hand (fixed)
About Longines
Augueste Agassiz founded Longines in 1832 in Saint-Imier, Switzerland. Now owned by the Swatch Group, the manufacture is best known for its aviator watches. Its Heritage Collection includes the Telemeter Chronograph, Heritage Retrograde, Column-Wheel Chronograph, and Heritage 1935. Longines is part of the Swatch Group group.
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