Certina Blue Ribbon Vintage Automatic Wristwatch

Vintage Certina Blue Ribbon automatic wristwatch with date, classic 34 mm case and period-typical design. The watch ticks and runs upon inspection, and the date function works.

The exact reference, production year and calibre have not been confirmed without opening the case back. Service history is unknown, and timekeeping accuracy has not been documented.

Specifications:
- Manufacturer: Certina
- Model series: Blue Ribbon
- Type: Automatic wristwatch
- Function: Date
- Diameter: 34 mm excluding crown
- Service history: Unknown
- Condition: Used vintage condition with normal signs of age and wear