Question: When did half pences go out of circulation?
Disambiguated questions and answers: question: When did the British Half Pence go out of circulation?
When did the Irish Half Pence go out of circulation?
When did the US halfpenny go out of circulation?
answer: December 1984
January 1, 1987
1857
Natural Questions answer: December 1984 (from the Wikipedia article "Halfpenny (British decimal coin)")