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Model EC 1 Echophone
Metal, glass

Model EC 1 Echophone commercial, 6 tube, AC-DC, three band, 545 KC-30.5 MC, 12 x 12 x 8.4 inch / 305 x 305 x 213 mm. Paper manual included. Was used in the clock room to provide a time signal to the chronograph. In the late 1950s…
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