Mystic Nerd
Posted October 17, 2020 - 10:49am
I can recognize the movement as clearly an Accutron movement. The caliber 224 series is the Accuquartz movement; 2242 is the version with day and date. They had the rectangular block at left center for the circuitry, as opposed to the discrete soldered components visiblein the 214 and 218 movements. The row of six screw holes at the far left is for adjustment/regulation, ranging from coarse (bottom position) to extremely fine adjustment, in the topmost position. Adding a screw to a hole slows the watch down.