TMC Handset Designer (Person) Unknown Manufacturer Telephone Manufacturing Company Date 1940 - 1959 (circa)
GPO 312L telephone Designer (Person) Heiberg, Jean Bjerknes, Johan Christian Designer (Organisation) Ericsson GPO Manufacturer Siemens Manufactured for GPO Date 1954
Ericofon telephone - old case model Designer (Person) Blomberg, Hugo Lysell, Ralph Thames, Gosta Designer (Organisation) Ericsson Manufacturer Ericsson Date 1956
Black GPO telephone Designer (Person) Unknown Manufacturer Unknown Manufactured for GPO Date 1959 (circa)