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Post‑war Omega Jumbo in steel
Crafted in 1947, this large 38 mm Omega Jumbo reflects post‑war proportions and restrained dial architecture, emphasised by a prominent sub‑seconds and period acrylic crystal. The steel case and refurbished dial preserve the watch’s mid‑century presence while pairing well with a calf leather strap. Powering the piece is the hand‑wound 30T2 PC, a 15‑jewel caliber from Omega’s respected 30 mm family known for straightforward, durable construction. Today such a watch appeals to collectors who value authentic 1940s engineering and a bold vintage wrist presence that integrates easily into modern wear.
Watch dossier
Important details, without the clutter.
01Specifications+
- Brand / model
- Omega Omega Ref. 2505-23
- Reference
- 2505-23
- Estimated production
- 1947
- Case material
- steel
- Case diameter
- 38 mm
- Lug-to-lug
- 47 mm
- Thickness
- 10 mm
- Dial
- refurbished
- Crystal
- acrylic
- Strap / bracelet
- calf leather strap
- Movement
- manual
- Caliber
- 30T2 PC
- Jewels
- 15
- Movement serial
- 1114••••
02Service & provenance+
Last serviced: 17 June 2026
The service includes the following operations: • Disassembly of the watch • Movement overhaul: dismantling • Cleaning, reassembly and lubrication • Use of Moebius synthetic oils • Ultrasonic cleaning of the case • Reassembly of the case and the watch • Final technical and aesthetic checks
03Delivery & returns+
Current store policies apply to this purchase.
Included with the watch