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Horological Meandering

Other Seiko:

 

Classic 6138, late 1960's (candidate for 'first automatic chronograph movement...'):



Civilian version of the great 7A28 (all-analog-display quartz chronograph):



Early 1970's Cal. 7016, mechanical column-wheel flyback chronograph with concentric elapsed-hours and -minutes display (and day/date...):



Loopy postmodern kinetic quartz chronograph, 2004:


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