Seventh Period Mark April 1980-Dec 1992

7th Period Mark or 1st Gold Mark. In April 1980 the seventh mark was introduced to commemorate the centenary of Gold medal won at the Melbourne Exhibition of 1880. The colour was changed to gold and the round disk with "deanta in eireann" was omitted At some time around 1984 the gold colour on the mark was substituted with a brown colour, the reason is not known but it is likely that the colour was changed due to the gold burning off during firing.