1945 Omega Cal. R17.8 Tank Case Wristwatch
Record status
Individual type · partial
Period
1945
Maker / issuer
OmegaThis vintage Omega tank-style wristwatch dates from 1945 according to the source dealer. The piece features a rectangular 14K yellow gold-filled case measuring 21 by 32 mm with elongated curved flanks.
According to the seller, it is powered by an Omega manual-wind mechanical movement, calibre R17.8, bearing serial number 10356600 and featuring 17 jewels. The dial shows extensive age-related mottling and patina across its surface, fitted with black Arabic numerals, an outer rectangular railroad minute track, gold-toned hands, and a subsidiary seconds register positioned at 6 o'clock. It is presented on a gold-toned Speidel flexible expansion bracelet.
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
- Tank wristwatch
- Calibre
- Omega R17.8
- Bracelet
- Speidel flex bracelet
- Jewel Count
- 17 Jewels
- Case Material
- 14K Gold Filled
- Place recorded
- Switzerland
- Case Dimensions
- 21 x 32 mm
- Movement Serial
- 10356600
- Case Back Marking
- T363989
- Maker / attribution
- Omega
Design
- Visible features
- • Rectangular gold-toned tank case with subtly curved flanks and straight hooded-style lug ends • Dial exhibits severe all-over mottling, discoloration, and patina • Sub-seconds register positioned above the 6 o'clock marker • Printed black Arabic numerals and matching railroad minute track • Mounted on an articulated Speidel-style flexible expansion metal bracelet
- Case Construction and Exterior Dimensions
- The watch features a rectangular tank case reported as 14K yellow-gold-filled. The seller records dimensions of 21 by 32 mm for the case, 23 mm with crown, a lug-to-lug length of 42.8 mm, a case thickness of 8.1 mm, and a lug and band width of 14 mm. Visual observation shows a rectangular gold-toned tank case with subtly curved flanks and straight hooded-style lug ends. The piece is mounted on an articulated Speidel-style flexible expansion metal bracelet, documented in the listing as a 'Speidel flex bracelet'.
- Dial Configuration and Observed Condition
- The dial displays severe all-over mottling, discoloration, and patina. It features printed black Arabic numerals alongside an outer rectangular black railroad minute track, gold-toned hands, and the Omega name and logo at the top. Direct observation confirms a subsidiary seconds register positioned above the 6 o'clock marker. The vendor listing description erroneously claims that the 'sub-second hand is at I o'clock position'.
- Movement Specifications and Interior Markings
- According to the seller's documentation, the watch houses a manual-wind Omega movement, calibre R17.8, inscribed 'OMEGA Watch Co. Swiss Seventeen 17 Jewels Cal. Omega R17.8 10356600'. The seller claims an operating frequency of 21,600 vibrations per hour and a 45-hour power reserve. The interior case back is reported by the seller to be marked 'Omega 14K Gold Filled' and 'T363989'. Neither the movement nor the interior case back markings are visible in the provided exterior photograph, and their verification relies solely on the dealer's transcription.
Identification
- Serial number
- 10356600
- 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: Movement and interior case back markings are documented by source description only and not visible in the provided photograph
- Research required: The source text erroneously specifies the sub-second hand at the 'I o'clock position', whereas visual evidence confirms it is at 6 o'clock