Oral Answers to Questions — Ireland. – in the House of Commons am ar 13 Gorffennaf 1922.
asked the Postmaster-General whether postmasters have been instructed to inform persons sending registered letters to Ireland not to put O.H.M.S. on the letters?
No, Sir.
Then any postmaster who has made such a request has exceeded his instructions?
As no such instructions have been given, that appears to be obvious.