![]() ![]() In Switzerland, toward the end of the 1960s, two coalitions of watch manufacturers were hard at work developing the world’s first automatic chronograph movement. But it’s much less common for a watch movement to gain fame and, after more than 50 years, achieve legendary status. It’s not uncommon for a watch to become a classic. In this historical feature from the WatchTime archives, contributor Thomas Gronenthal takes a look at its development. Zenith’s El Primero automatic chronograph caliber - unveiled to the world just over 50 years ago, in 1969 - is regarded as one of the world’s best and most accurate movements. ![]()
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