I believe it was 1957.
1957
The Celtics won in the year 1957.
they won their 16 championship in 1986 when they defeated the Houston rockets
The Boston Celtics
The Celtics won their championship in Game 6 at the TD Banknorth Garden.
Twelve times. The Celtics have won nine of the championship meetings.
The Boston Celtics have the most number of NBA championship titles with 17.
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The Lakers' first NBA title win over the Boston Celtics occurred in 1985. They beat the Celtics again in 1987 and 2010.
Yes with 17 championship rings.
The Celtics played a total of 122 championship games. Their win-loss record is 74-48.
Boston celtics with 16 championship