For sale is a vintage Leonidas double-register chronograph, Swiss-made, in fully working condition. Leonidas was a respected Swiss watchmaker that later merged with Heuer, making these pieces highly collectible as pre-Heuer chronographs. Details • Brand: Leonidas • Model: Double Register Chronograph • Movement: Landeron 48 manual wind chronograph movement, 17 jewels • Running seconds at 9 o’clock • 30-minute chronograph counter at 3 o’clock • Central chronograph seconds hand • Chronograph starts, stops, and resets properly • Case: Stainless steel, screw-back, approx. 36–37mm (excluding crown) • Dial: Original vintage silvered dial with even patina, black numerals, two subdials • Crystal: Acrylic, clear and intact • Condition: • Watch is running strong and keeping good time • Chronograph functions as intended and resets to zero • Case in very good condition for its age, with light wear consistent with vintage • Dial shows attractive even aging/patina, hands original • Leather strap is a new aftermarket replacement • Water Resistance: Not tested, not guaranteed (common with vintage chronographs) Notes This watch houses the Landeron 48 chronograph movement, one of the most important cam-switched calibers of the mid-20th century. These were widely used by respected Swiss brands, and Leonidas’ examples are especially collectible given their historical connection to Heuer. A great opportunity to own a genuine pre-Heuer Swiss chronograph that is both functional and historically significant.