PhilaKorea 2014 World Stamp Expo Union Flag Faststamp set
Union Flag Post and Go Faststamps produced in Korea at the Exhibition from Royal Mail machines A3 003 or A004.
World Stamp Expo
Similar stamps with the same caption were printed in the UK sold by Royal Mail from Tallents House. These have the datastring
This is a Collectors Strip of 6 Flags printed in the UK