Charleston slave badge from 1846 for Servant No. 1512

This is a square metal slave badge set on point with clipped corners. On the recto is text that reads” CHARLESTON [stamped]” across the top. Under that is “1512 [punched] / SERVANT [stamped]/ 1846 [stamped].” There is a mended cut on the proper left side that begins at the upper left edge and runs to the number five. There is a hole punched at the center top.