Zenith A384 (Pre-owned - Excellent) — USD 6,833 on eBay

The Zenith El Primero reference A384 is notable for being among the earliest models to house the brand's high-frequency automatic chronograph movement. Introduced in 1969, it presented a distinctive aesthetic that set it apart from many of its contemporaries, characterized by its tonneau-shaped case and a dial layout that became a signature for the El Primero line. This reference is recognized for its historical significance in the development of automatic chronographs. The A384 features a stainless steel case, measuring 37mm in diameter. It is powered by the Zenith El Primero caliber 3019 PHC, an integrated automatic column-wheel chronograph movement operating at 36,000 vibrations per hour, providing a power reserve of approximately 50 hours. The watch typically utilized an acrylic crystal, contributing to its vintage appeal and period-correct specifications. This reference appeals to collectors interested in the foundational pieces of the El Primero series and early automatic chronographs. Its design, while unique, is a clear precursor to later El Primero models, making it a key piece for understanding the evolution of the line. The A384 is valued for its originality and its place in watchmaking history.