Mike Curtis was a four-time Pro Bowler in 1968, 1970, 1971 and 1974. He was considered one of the meanest players of his era. Although sacks were not official during the time he played, Curtis was a good blitzer, recording 22 sacks, including one in which a famous photograph was taken of Curtis tackling Roman Gabriel's head. Curtis also picked off 25 passes and was named the AFC Defensive Player of the Year in 1970.

This Baltimore Colts mini helmet was signed in blue by Curtis and inscribed, "Mad Dog" and "Super Bowl V Champs." This mini helmet includes a BCO sticker.