"NBA" is stenciled over a white background if the championship was clinched at home; "NBA" is stenciled over a green background if the title was won away. Some do not accurately reflect this, however, because of mistakes made when replacing banners either damaged by water or stolen.
A penny reflecting the year of the banner is sewn into the label.
And according to Flynn, tonight's banner-raising might have a new twist.
"Let's just say it's going to be interesting," he said.