Technical Details & Model History

• Case: stainless steel, 37.5 mm diameter
• Movement: manual-winding Omega caliber 33.3
• Dial: extremely rare original black dial with multiple scales
• Functions: two-register chronograph
• Crystal: domed plexiglass
• Strap: brown crocodile leather
• Reference: CK 2393
• Period of production: 1940s
• Special feature: Portuguese import hallmark on one lug
• Condition: exceptional, remarkably well-preserved example

Key Features

• Iconic Omega chronograph powered by the caliber 33.3
• Extremely rare black multi-scale dial, among the most fascinating designs of the period
• Large stainless steel case for the era (37.5 mm)
• Presence of the Portuguese import hallmark, a historical detail highly appreciated by collectors

Historical Context

During the 1930s and 1940s, Omega developed some of the finest chronographs in its history, many of them powered by the celebrated caliber 33.3, one of the most important chronograph movements ever produced by the maison. Reference CK 2393 represents one of the most fascinating expressions of this production, particularly in the rare configuration with black dial featuring multiple chronograph scales. The example presented here, bearing a Portuguese import hallmark and preserved in exceptional condition, is a true collector’s piece for enthusiasts of historic chronographs.