When was Bobby Orr's last game as a Bruin?

Bobby Orr's last game as a Boston Bruin was on April 10, 1976. In that game, the Bruins faced the Philadelphia Flyers in the playoffs. Orr's career was significantly impacted by injuries, and he would go on to play for the Chicago Blackhawks after leaving Boston. His departure marked the end of an era for the Bruins and the NHL.