https://trevorhowsam.com/thbbph07-black-bakelite-telephone/
1930s 1940s Black Bakelite phones (200 / 300 series) and other Bakelite Phones - Birmingham Home and Office Telephone company (and others) wallphone and desk telephone pre 1960 New Prop Stock Telephony Commercial U.K telephones GPO and other (commercial / office) UK Telephones
BakeliteBirmingham telephone companyCurly cablehandsetTelephoneThe Birmingham Home and Office telephone Companywall telephonewallphone