Likely 1940s. Magnetic fields from electrical appliances could affect the mechanical movements of watches and cause them to lose time. In 1930, the Swiss company Tissot introduced what is generally considered the world's first antimagnetic wristwatch, the Tissot Antimagnetique.
Dial diameter: 29 mm.
Condition
Small crack/scratch on the dial between 10 and 11 o'clock. Minor scratches.
Likely 1940s. Magnetic fields from electrical appliances could affect the mechanical movements of watches and cause them to lose time. In 1930, the Swiss company Tissot introduced what is generally considered the world's first antimagnetic wristwatch, the Tissot Antimagnetique.
Dial diameter: 29 mm.
Condition
Small crack/scratch on the dial between 10 and 11 o'clock. Minor scratches.