British Post Office Technology

Issue Date - October 1, 1969

SG 808 - National Giro, 5d

SG 809 - Telecommunications - International Subscriber Dialing, 9d

SG 810 - Telecommunications - Pulse Code Modulation, 1s

SG 811 - Postal Mechanisation - Automatic Sorting, 1s 6d

First Day of Issue Official Covers