Omega Izmir-Kasaba Railway Pocket Watch
Record status
Individual type · partial
Period
1912
Maker / issuer
OmegaThis Omega pocket watch, identified as a railway man's timepiece, was produced in 1912. It features a two-body silver case measuring 58.5 mm in diameter, characterized by a polished finish and a screw-down bezel with a serrated top edge.
The case back is decorated with an engraving depicting a steam engine traversing a bridge. The white enamel dial displays bold black radial Roman numerals, an outer minute track, and a recessed subsidiary seconds dial at the six o'clock position, paired with blued steel spade hands. Powering the watch is a Caliber 20 LOB NN movement, which is a frosted gilt unit with 15 jewels, a straight-line lever escapement, a cut bimetallic compensation balance, and a blued steel Breguet balance spring with an index regulator.
The watch is signed on the dial, case, and movement. The source notes that most watches of this caliber and decorative style were supplied to the Izmir-Kasaba railways.
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
- Railway pocket watch
- Movement
- Cal. 20 LOB NN
- Case number
- 5108647
- Jewel count
- 15 jewels
- Case diameter
- 58.5 mm
- Serial number
- 4412049
- Reference number
- 508.20
- Date of production
- 1912
- Maker / attribution
- Omega
Design
- Case and Dial
- The watch is housed in a solid, two-body silver case measuring 58.5 mm in diameter. The exterior finish is polished, and it incorporates a screw-down bezel featuring a distinct serrated top edge. A significant decorative feature of the case is the back, which is engraved with an image of a steam engine moving over a bridge, a motif associated by the source with railway-specific deliveries. The watch face consists of a white enamel dial featuring bold, black radial Roman numerals for the hours. It includes a functional outer minute track and a sunk subsidiary seconds dial. The time is indicated by a set of blued steel hands in a spade shape, providing contrast against the white enamel background.
- Visible features
- • Case back features an engraved steam engine scene • Dial features bold black Roman numerals • Serrated screw-down bezel design
- Movement and Escapement
- The internal mechanism is the Caliber 20 LOB NN. This frosted gilt movement is constructed with 15 jewels. It is equipped with a straight-line lever escapement and a cut bimetallic compensation balance designed to mitigate the effects of temperature variations. The watch features a blued steel Breguet balance spring and an index regulator for timing adjustments. The technical notation LOB NN indicates specific features of this movement, where L represents the Lépine construction, O denotes Omega, and B refers to the jewel count and Breguet balance spring configuration.
- Provenance and Signatures
- The object is identified by the serial number 4412049, with a corresponding case number of 5108647. The dial, case, and movement are all signed by Omega, confirming the integrity of the components as a singular unit as reported by the auction description. Regarding the specific historical application of this watch, the source indicates that the majority of timepieces sharing this particular caliber and decorative engraving were delivered to the Izmir-Kasaba railways. This information serves to contextualize the watch as a specialized piece intended for railway service, though it remains a contextual note provided by the cataloguer.
Identification
- Reference
- 508.20
- Serial number
- 4412049
- 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: Association with Izmir-Kasaba railway remains a documented note rather than a confirmed provenance for this specific serial number
- Research required: Exact country of manufacture is not stated in the source