SIEMENS BROTHERS No. PTD 509


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: June 20, 2011

FM2