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Other stamps in the Myths and Legends collection depict Blodeuwedd of Welsh mythology, Irish heroic figure Fionn mac Cumhaill, the spectral hound of East Anglia, Black Shuck, selkies and a grindylow.

Donald got in touch with the Carryduff club which was able to contact the sliotar's original owner, eight-year-old Fionn O'Neill.

Fionn is a member of the club and was awarded the ball because he was able to do three roll lifts in a row - a skill in which the hurling stick is rolled over the sliotar before it is flicked up into the hand.

Fionn lost the ball on a beach while he was on holiday with his family in Donegal last July.

Donald said he is open to the idea of Fionn and his family travelling to Scotland in person to reunite them with the ball.