The attestation of Edward IV Irish penny portrait “M” at Waterford – Oisín Mac Conamhna

The purpose of this note is to record the attestation of the Edward IV Irish penny portrait “M” at Waterford, on a specimen that has come to the author’s attention recently. The portrait was not noted specifically by Burns 2017 in his foundational work on the series, but is labelled here by extending his portrait classification scheme (which ends with portrait “L”) to the next available letter.