hi there
to this answer is
The correct answer should be - Harp.
The symbol of a Harp is considered to be one of the oldest in symbols representing of the culture of Ireland. The oldest of the harps, also known as the 'the Trinity College Harp' that is used as the 'official' national emblem of the symbol of Ireland.
i hope this helps you out
have great evening
FaithRawlins14