An Post was forced into apologising over an error on its Moon landings stamps.
Two out of four of its commemorative stamps marking the 50th anniversary of the landings had a spelling mistake.
The spelling for the word moon in the Irish language, gealach, was mistaken for gaelach, which means Irish.
The translated sentence read: "50th Anniversary of the First Landing on the Irish."
The company said: "An Post apologises for this error and arrangements have been made to ensure that such an error does not occur again."
The stamps featured four NASA astronauts with Irish ancestry.
Apollo 11 crewmen Neil Armstrong and Michael Collins featured on the stamps with the error.
While, Cady Coleman, who released the stamps at a ceremony last wee, and Eileen Collins appeared on the other two.
An Post added: "While the original Irish text was correct, the transposition of letters in a later draft was not picked up during final proofing, ahead of the printing and release of the stamps on July 4th last.
"During the design process for the recent Space Exploration stamps, the letters 'a' and ‘e’ were transposed in the Irish language title on two of the four stamps."
