The Omega Caliber 420 is indeed a remarkable manual-wind movement from the 1950s. A few points that highlight its robustness and appeal to collectors:
• Chronometer-grade quality: Many Cal. 420 movements were chronometer-certified, meaning they were tested in multiple positions for precision—a testament to their reliability.
• Five-position adjustment: This made them highly accurate and capable of maintaining consistent timekeeping under different conditions, which was exceptional for the era.
• Durable construction: The movement features a solid bridge layout, high-quality finishing, and shock-resistant components, making it long-lasting and serviceable even decades later.
• Collector appeal: Watches with the Cal. 420, especially in gold-capped or rare case designs, are highly sought after by enthusiasts due to their technical excellence and historical value.