🇬🇧 This looks like a case of premature issue. The final Royal Mail First World War Centenary issue is due for release on 13 September 2018 but a seller on an internet auction site is offering a used example of one of the £1.55p values for sale with the start of the sale being today, Tuesday 28 August which is quite a long way ahead of the planned date of issue. Unfortunately the stamp is not cancelled by a date stamp.
🇸🇸 Following the surcharged stamps of 2017 which were reported in Blogs 1171, 1165, 1149 and 1134 it appears that more surcharges have now been released by the postal service of South Sudan. Two surcharges on the SSP5 Saddle billed crane stamp of 2012 are currently being offered for sale on an internet auction site - the first is a SSP100 surcharge in black and the second is a SSP300 surcharge in red. Rating:- *****.
🇬🇬 As mentioned in Blog 1277 Guernsey Post will issue Guernsey Flag Post and Go stamps with an additional inscription and icon on 12 September 2018 at Autumn Stampex 2018. The inscription commemorates the Centenary of the Royal Air Force.
In Blog 1235 I listed some of the My Stamps issues released by India Post in the early part of 2018. Further such issues are listed below:-
10 March 2018 - Indian Institute of Technology, Bombay - 2 stamps in sheets of 12 (6 x 2) with attached labels sold at a premium.
22 May 2018 - Border Security Force Wives Association - 1 stamp in sheet of 12 with attached labels sold at a premium.
13 May 2018 - Birth Centenary of Shri CU Shah, the Shri CU Shah Medical College and Medical School -1 stamp in a sheet of 12 with attached labels sold at a premium -
26 May 2018 - Vishwam Museum, Avdhoota Datta Peetham Mysuru - 1 stamp in sheet of 12 stamp with attached labels sold at a premium.
7 July 2018 - Signs of the western Zodiac - 12 sheets each contains 12 stamps with a different stamp featured in each sheet. Subjects are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces. All sold at a premium.
9 July 2018 - 'The Ridge', Shimla in Himachal Pradesh - 1 stamp in sheet of 12 stamps with attached labels sold at a premium.