Throughout the 1960s and 1970s, CIÉ embarked on a wide-scale replacement project of the ageing, non-standard fleet of goods wagons it had inherited from Great Southern Railways. One of the types of wagon introduced as part of this scheme was the 20ft container flat (or ConFlat for short). 27756 is one of these conflats, which were used for transporting standardised containers and the famous Guinness keg cages. It was built in 1970 at Inchicore Works.

Though 27756 was withdrawn when the Guinness traffic ended in 2006, it managed to escape the scrapman until July 2017, when it was purchased by one of our volunteers and moved to the DCDR. Its use is quite an important one – it carries our spare English Electric 4SRKT engine, which would otherwise be hopelessly impractical, if not logistically impossible, to store.