Posted 6 years ago
This type of badge was used by the CPD until 1955, when they changed the style of the badge to a five point star.This type of badge was know as a "pie plate" because it was so large. This particular badge was worn by a Chicago policeman until 1955. He retired at the rank of Sergeant during the 1980's. The copper numbers are individually applied. This is how the term "copper", later cop,was coined.