Trimphone telephone Designer (Person) Rowlands, Martyn Manufacturer STC Manufactured for GPO Date 1966 (circa)
Brown Trimphone telephone Designer (Person) Rowlands, Martyn Manufacturer STC Manufactured for GPO Date 1966 (circa)
Viscount telephone Designer (Person) Carr, Peter Howett, Fred Hiner, Peter Designer (Organisation) STC Manufacturer STC Manufactured for BT Date 1981 - 1989 (circa)
Deltaphone telephone Designer (Person) Rowlands, Martyn Manufacturer STC Manufactured for GPO Date 1966 (circa)
Cream Trimphone telephone Designer (Person) Rowlands, Martyn Manufacturer STC Manufactured for GPO Date 1966