This is a set of pinback one-inch buttons of the Hanson Brothers from Slapshot (1977 classic hockey film with Paul Newman). They are from stills of the movie after an all out brawl in the middle of a game.
The real-life inspirations for the Hanson Brothers are Jeff Carlson (born July 20, 1953), Jack Carlson (born August 23, 1954), and Steve Carlson (born August 26, 1955). The brothers were born in Virginia, Minnesota and first played together on the Marquette Iron Rangers hockey team in Marquette, Michigan.
Jack Carlson was unable to act in the film as the Edmonton Oilers called him up for the WHA playoffs. In his place, Dave Hanson (born April 12, 1954 in Cumberland, Wisconsin) fulfilled the role. In the movie, they speak with a typical North Central American accent, owing to their hometowns, in areas where hockey is prevalent. The United States Hockey Hall of Fame is located in Eveleth, Minnesota, only a few miles from Virginia, home of the Carlsons. The Iron League, from which the Hansons are supposedly bought, may be a reference to the Marquette Iron Rangers or the Iron Range, a hockey hotbed in Northern Minnesota.
Jeff Carlson, Steve Carlson, and Dave Hanson continue to make personal appearances as the Hanson Brothers, typically at minor league hockey games, as of 2007.