A Roundworld Emberella (or three) these stamps were issued to help fund the Banjul or Bust journey of 2006 by the erstwhile Klatchian Foreign Legion. Some 75 covers were transported from Plymouth (UK) to Banjul (The Gambia) where they would be posted to recipients. There were actually three printings of the stamps, each with recognisable shade variations.

Proof sheet of stamps as it appears
on the Discworld Stamp Catalogue