Trimphone telephone Designer (Person) Rowlands, Martyn Manufacturer STC Manufactured for GPO Date 1966 (circa)
Black GPO telephone Designer (Person) Unknown Manufacturer Unknown Manufactured for GPO Date 1959 (circa)
Brown Trimphone telephone Designer (Person) Rowlands, Martyn Manufacturer STC Manufactured for GPO Date 1966 (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