This is a vintage 1950s Eterna-Matic automatic wristwatch, featuring the brand’s innovative automatic winding system that helped define Swiss watchmaking in the mid-20th century.

The watch is housed in a 14K gold-filled rectangular case (marked inside caseback: “Eterna – 14K Gold Filled L&K – 1820”). The caseback is also engraved “Eterna-Matic”, and the watch retains a clean minimalist aesthetic with its champagne dial and applied gold-tone indices.

The movement is the legendary Eterna-Matic rotor system, marked:

“Eterna-Matic Watch Co.”

“Seventeen 17 Jewels”

“Swiss”

“Unadjusted”

Serial number: 4038819

This watch is currently running and keeping time.

Brand: Eterna

Model: Eterna-Matic

Era: 1950s

Movement: Automatic, 17 jewels

Case: Rectangular, 14K gold-filled (L&K)

Caseback: Signed Eterna-Matic, inside stamped Eterna 14K Gold Filled L&K 1820

Dial: Champagne tone, applied gold baton indices, minimalist design

Crystal: Acrylic

Band: Brown leather strap (aftermarket)

Condition: Running, case shows normal wear from age, dial clean and original, light scratches consistent with use

A classic mid-century Swiss automatic watch with the signature Eterna quality. Perfect for collectors or as a refined vintage dress piece.