In this video, YouTube: Did Ancient Romans Use Tattoos? @ 4:35, the presenter mentions some "taxes paid" tattoo or branding for slaves sold outside of the empire. Do we have any evidence of what these would have looked like, or what particular wording/abbreviations would be used for such?
My previous attempt to have this answered last year led understanding this was a publicani marking and more likely to have been a brand than tattoo. I would like the question reopened given the additional information that is here presented even if it was acquired from last year's question. Thank you.