Zenith Telephonometer with a mechanical movement and two ele...

Zenith Telephonometer with a mechanical movement and two electrical connections, serial no. 1077178, circa 1910, the white dial with a subsidiary seconds dial and centre twelve minutes display, inscribed with Patent numbers 'S.G.D.G 373533', 'D.R.P 189161', 'Pat. 2.336/08', in a nickel plated case with a brown Bakelite base and lever, 2.25" diameter ** From the David Read Collection

Estimación:€58.92

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