From the omega.ch vintage database:
Reference number: CK 2366
Movement
* Caliber number: 30 T2 RG
* Created in 1943
16 or 17 jewels
Dial
Not available
Crystal
Hesalite
Bracelet
Leather
Water resistance
No
Case details
* Stainless steel
* Press-in
* Full metal
Functions
Chronometer, Subsecond
More product information
Case : round (35,5 mm diameter)
For leather straps of 18 mm lug-size
International Collection : 1943-1958
Swiss retail price (1946) : CHF 202.-
Also available in stainless steel with 14K gold bezel and lugs (CO 2366, CHF 250.-), in 14K solid gold (OJ 2366, CHF 475.-) and in 18K solid gold (OT 2366, CHF 556.-).
Same watch as ref. 2527 but with chronometer certification.