The Ring of the Fisherman, also known as the Piscatory Ring an the Pescatorio (in Italian), is an official part of the regalia worn by the Pope, who is described by the Catholic Church (of which he is the head) as the successor of Saint Peter, who was a fisherman by trade. It features a bas-relief of Peter fishing from a boat, a symbolism derived from the tradition that the apostles were "fishers of men" (Mark 1:17). The Fisherman's Ring is a signet used until 1842 to seal official documents signed by the Pope.