by Jon Edwards

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A Nivarox Branded Observatory Competition Peseux 260 From the 1950s

Today Nivarox operates largely behind the scenes, supplying the beating heart inside the vast majority of spring-powered Swiss timepieces, from Swatch to Patek Philippe. The low escape wheel in this caliber allowed for a larger balance wheel & thus better rate stability. Kari Voutilainen later employed the Peseux 260 in his series of Observatoire timepieces, which were awarded certificates of chronometry from Besançon Observatory.

Image from ebay listing