Hi allAs Omega entered the 1960s the demand for manual wind watches was on the decrease.  The sales of automatic watches was on the rise, time only, time and date, and even chronometers. By 1962-63 Omega retired tbe 30 mm movement line.  They replaced it with the caliber 60x line.  The 600 series caliber is a stripped down 55x automatic.  Most Omega collectors hold the 552 as one of Omegas best calibers period.With all the above said the future of Omega’s manual wind time only chro...

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