The International Year of Disabled Persons was declared by the United Nations for 1981, not 1984 — Portugal's commemorative arrived three years late. The delay was not unusual for INCM during this period, when the mint was managing a heavy schedule of circulating issues following the political instability of the post-Carnation Revolution years and the demands of building a new monetary identity after 1974.
The International Year of Disabled Persons was declared by the United Nations for 1981, not 1984 — Portugal's commemorative arrived three years late. The delay was not unusual for INCM during this period, when the mint was managing a heavy schedule of circulating issues following the political instability of the post-Carnation Revolution years and the demands of building a new monetary identity after 1974.