This is an original mailing envelope for the postponed May 4, 1937 middleweight championship fight between Freddie Steele and Ken Overlin at the Seattle Civic Auditorium in Seattle, Washington. The two fought later in the year with Steele winning. This is an original mailing envelope used to advertise this fight and picturing both fighters. Envelope was unused. Not creased or torn. Minor soiling from handling. Bold color and sharp images. 4 1/8" x 9 1/2."