Charleston slave badge from 1813 for Servant No. 12

This is an octagonal metal slave badge. On the recto is text that reads ”CHARLESTON [stamped]” across the top. Under that is “1813 [stamped] / SERVANT [stamped] / No. [stamped] 12 [engraved] .” On the verso is a stamped cartouche at the center with the maker's name “LAFAR.” There is a diagonal line in the bottom of the badge through the ‘1’ of the ‘12’, possibly a repair. There is a hole punched at the center top.