Charleston slave badge from 1805 for Mechanic No. 194

This is an octagonal metal slave badge. On the recto is text that reads ”CHARLESTON [stamped]” across the top. Under that is “No. [stamped] 194 [punched] / MECHANIC [stamped] / 1805 [stamped].” On the verso is a stamped cartouche at the bottom center with the maker's name “C PRINCE.” There is a hole punched at the center top.