The Moche produced fine ceramic, textile and precious metal pieces. Their characteristic style can be seen in a wide range of goods such as fire-engraved gourds, wall murals, featherwork art, body painting and tattoos. Their ceramic decoration displays a level of skill that has rarely been surpassed, and included such techniques as incision, bas-relief with stamps, and painting on smooth surfaces. Many were made in state-run workshops that mass-produced pieces from molds. Their ceramics came in a variety of forms and decorative styles and displayed myths and ritual motifs as well. Notable among these earthenware forms were the so-called “portrait bottles”, bottles molded with the face of a well-known Moche figure. These highly detailed facial portraits reflect the Moche’s own use of face paint and/or tattoos, as well as elaborate headdresses. This portrait-making expertise can also be observed in everyday scenes and erotic representations, as well as in figures of individuals that were hunch backed, blind, or suffered from other disorders. They were skillful metalworkers, using gold, copper and silver to make ear ornaments, nose rings, bracelets, necklace beads, tweezers and a variety of tools. Especially notable is the tumi or ceremonial knife that was usually only carried by Moche officials.