BT Test and Service Cards

Collection by Telephone Card Collector

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British Telecom (BT) Test and Service Cards, including Test Cards 1A and 3A.

Telephone Card Collector
British Telecom (BT) Optical Cardphone Test Cards and Gyr, Test Card, Competition, British, Number, Cards, Maps, Playing Cards, England

BTT001 - Test Card 1A - handwritten voltages - Control number: 497 306

Landis and Gyr Software Testkarte for STU 07 (Structure Great Britain - Control number: Gyr, Test Card, Great Britain, Software, British, Number, Cards, Maps, Playing Cards

Landis and Gyr Software Testkarte for STU 07 (Structure 7) Great Britain - Control number: 112L00020

Test Card without any printed numbers/values Number Value, Gyr, Test Card, Competition, Numbers, British, Printed, Cards, Maps

BTT005 Test Card without any printed numbers/values

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