Here is a 1976 Model Railroad Approved Bulova Accutron 214. It is electromechanical and a tuning fork in the watch drives the gear train. It gives the impression that the second hand is sweeping or has continuous motion. Also in this video is a Swiss made watch for comparison of quartz movement. The Bulova Accutron was first introduced in 1960 and discontinued in 1977. Thanks for looking! Holan holannakata.com
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