The Railway Signal Co – Polunnio Ltd. As you can see, this is not a folding card, but only printed on one side.
Vintage General Railway Signal Company Type W Size 2, 54250 AC Relay Pat. 1953
Railwayana Brass "S G E The Siemens And General Electric Railway Signal Company
General Railway Signal Co Railroad Crossing Signal Reference Manual
Style General Railway Signal Relay
Vintage General Railway Signal AC Relay Type HS - Untested
