The 1977 Chatham Cup was the 50th annual nationwide knockout football competition in New Zealand.
Nelson United became the first team from outside the four main urban centres to win the cup since 1962.
Against them was a Mount Wellington side containing the likes of Ron Armstrong, Brian Turner, Tony Sibley, and Earle Thomas.
The only goal came early in the second half when referee John Perkins pointed to the spot after a foul on Nelson's David Powdrell by Stewart Carruthers.
The penalty was converted by John Enoka giving Nelson a one-goal lead they never relinquished.