P. S. Bruce, On this site is shown an example of one from 1942.http://www.gordonmumford.com/m-navy/radio-01.htm At that date, they were issued by the Postmaster General. Regards,Adi   From: Bruce Dodd via <mariners@rootsweb.com> To: MARINERS@rootsweb.com Sent: Wednesday, August 5, 2015 6:52 PM Subject: [MAR] Telegraphers' tickets  ....Can someone suggest, please, where I might look for Radio/Telegraphers' tickets? Assuming, of course, that there are such things, authorized by some (which?) authority. The cousin in question sailed afaik with Union-Castle, London Overseas Freighters, and Sea-Link.

Aha! This one looks promising. Would your cousin have sat his certificate exam during that period 1910 - 1974? "Information of Radio Officer Examination Results from 1910 to 1974 is currently held at Merseyside Maritime Museum consisting of 118 volumes. These records offer a fascinating insight into the PMG examinations especially the handwritten comments of the examiners. Other Radio Officer Examination Results from 1950 are held at the Association of Marine Radio Colleges (AMERC) national administration centre at Wray Castle College, Ambleside, Cumbria, details are held on cards and ledgers." Regards,Adi