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This Longines 6512 movement was developed under the Project Beta21. Longines states, they did not want to be dependant on big electronic companies, so they decided to use a self developed discrete (14 Transistors, 19 Resistors and 7 Capacitors) electronic instead of an integrated circuit, a surely expensive process. Also a stepping motor ws not available at that time, so they developed one themselves. signed Front:”Longines, Ultra-Quartz”, back: “Longines, Ultra-Quartz, 16, 106960, Stainless Steel”, inside:” 6512, Longines Swiss, Eight 8 Jewels, Unadjusted, 31594380”. Calendar between 4 and 5.
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