Badge of the Detroit Police Department from the 1970s, design from circa 1933date QS:P,+1933-00-00T00:00:00Z/9,P1480,Q5727902 and used unchanged into the mid-2000s, when it was retired and superseded by a new design.
https://i.etsystatic.com/12802886/r/il/1c286e/2932370384/il_1140xN.2932370384_g7fx.jpg
City of Detroit.