Collectors have reported two slogan postmarks that have not been announced by Royal Mail. I suspect that these were in use for no more than 2-3 days, so I - and the British Postmark Society - will be interested in better images and reports of usage on any day from any office.
The first reported is from SE Wales Mail Centre on 22 January and celebrates St Dwynwen's Day on 25th.
The second is from Edinburgh on 22 January and marks Burns Night, also on 25th
Thanks to Stampboards members for posting these for the British Postmark Database.
UPDATE 2 February
John E has sent me copies of both slogans on letters posted in the Lancashire and South Lakes MC area. These are both from IMP machine 2 at the same time, demonstrating that the slogan is variable depending on destination. John says "This only applies to IMPs - the iLSMs used by Aberdeen, Edinburgh and
Glasgow as well as elsewhere in England, can use only one slogan at a
time - hence 'Burns Night' being seen on letters to England."
938. Whales From Bahamas; Independence Celebrations From Maldives; Transport From India. - 🇧🇸 *The Bahamas Postal Service *will issue a set of 4 stamps on 10 April 2017 as the second part of its series which commemorates the 25th annivers...