I happened to read recently that the Romans stamped lead pipes with inscriptions so they could track, I guess, if a pipe was authorized or stealing water. http

I happened to read recently that the Romans stamped lead pipes with inscriptions so they could track, I guess, if a pipe was authorized or stealing water. https://en.wikipedia.org/wiki/Roman_lead_pipe_inscription https://en.wikipedia.org/wiki/Roman_lead_pipe_inscription