For the character from "Charlie X", please see Charles Evans.
Charley was a NYPD police officer assigned to Precinct 19 in New York City during the late 1960s.
In 1968, he and a colleague were sent to the apartment where Roberta Lincoln worked, answering her telephone emergency call. When the two cops tried to arrest Captain Kirk and Spock there, Charley and his partner were accidentally beamed on board the USS Enterprise, but were transported back to New York seconds later. (TOS: "Assignment: Earth")
Charley was played by Bruce Mars who also played Finnegan in the same series.
His precinct can be determined by the numbered pin on this collar.