Guernsey Post Faststamp - Guernsey Flag 17 February 2016 - Post and Go
Guernsey Post introduced their Post and Go machine GG01 at Spring Stampex 2015 with a machine dispensing on one roll the Guernsey Flag stamp and on the other Royal Mail's Union Flag stamp.
The same machine was in use at Spring Stampex 2016 where there was an additional inscription on the stamps reading:
500 Years of
The service indicator is GY Letter up to 100g
This is a single Guernsey Post Faststamp at the GY Letter 100g rate