Eterna-Matic Centenaire “61” – Vintage Swiss Automatic Watch (Early 1960s) Offered for sale is an original Eterna-Matic Centenaire “61”, a classic Swiss automatic wristwatch produced in the early 1960s. This model belongs to the Centenaire line, introduced to celebrate Eterna’s 100th anniversary, and represents one of the brand’s most important technical and design milestones. Key details • Brand: Eterna • Model: Eterna-Matic Centenaire “61” • Production period: Early 1960s • Movement: In-house Eterna automatic caliber (1438U / 1439U), date function, featuring the iconic five-ball-bearing rotor system • Case: Steel / gold-capped style with stainless steel case back (typical for the model) • Dial: Silver/white dial with applied indices and date window at 3 o’clock • Crystal: Plexiglass • Strap: NATO strap (non-original) Dimensions • Case diameter: approx. 35–36 mm (without crown) • Case thickness: approx. 10 mm • Lug width: 18 mm Condition • Original vintage watch in honest, age-appropriate condition • Case shows light surface wear consistent with age • Dial is clean and well preserved • Movement is running at the time of listing • Please note: as with all vintage watches, accuracy is not guaranteed to modern chronometer standards Why this watch • Historically significant model from a major Swiss manufacture • The Eterna five-ball-bearing rotor system is a landmark innovation in automatic watchmaking • Collectible yet very wearable classic dress watch Important notes • Blue quality box / no papers • The watch shown is exactly the watch you will receive Shipping We stand behind every item that we sell. All photos are of the actual watch in stock and form part of the description. Carefully packaged and shipped via registered shipping from the EU. A genuine piece of Swiss horological history, suitable for collectors and vintage watch enthusiasts alike.