P.T.D.
509Table and Wall type telephones of the latest patterns, as No. 356A/A and 367A/A respectively, but fitted with Perspex covered Lamp Signalling Unit.
P.T.D.
509
Table and Wall type telephones of the latest patterns, as No. 356A/A and 367A/A respectively, but fitted with Perspex covered Lamp Signalling Unit.
From SIEMENS BROTHERS & CO. LIMITED catalogue No.500/54
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Last revised: October 23, 2003
FM2