1960s Longines 30CH chronograph ref. 7412

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Following the historic 13ZN, the Calibre 30CH was Longines' final in-house manual-wind chronograph movement—and it was a masterpiece. Operating with a high-grade flyback complication, this calibre represents the end of an era. The reference 7412 frames this technical mechanical treasure within a beautifully balanced, oversized dress case, featuring a clean silver dial with delicate multi-scale tracks.