1 Farthing - Edward IV Three crowns

Edward IV's Irish coinage of this period emerged from a deliberate policy of differentiating Dublin-struck silver from English issues — the three-crown type was specific to Ireland and carried no direct English equivalent. The mint was operating under significant political strain during these years, as Yorkist control of Ireland was never fully stable and Dublin's civic authorities frequently clashed with royal appointees over minting rights and profit shares.

At 0.56 g, these were struck to a debased standard relative to earlier Irish farthings, reflecting chronic silver shortages that plagued the Dublin mint throughout the 1460s.