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16 March 2026
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Eco Magneto Clock Co., Boston, Mass., circular dial time recorder, 8 day, time and recorder function for 9 watchman's stations, twin-spring Seth Thomas balance wheel movement in an oak case with black glass and gold leaf reading "Eco Magneto Clock Co. / B
The Eco Magneto time recorders used an ingenious system that avoided the problematic batteries of the time. A watchman, when checking in at one of the...