Charleston slave badge from 1801 for Mechanic No. 108

A circular copper slave badge. The front of the badge reads "*Charleston* / No. 108 / Mechanic / 1801." The back of the badge reads “C.Prince.” All lettering is die stamped into the metal except the number “108”, which is engraved. There is a puncture hole at the top of the badge. The metal is dark in color with a green patina.