Neither the literary nor the archaeological sources, supply us with sufficient information about mosaic workshops, which was called Officina, also we don't know who are the people carrying out the work, whether a single worker by his own or a group. We get some sporadic information about mosaic workers from a few sources, such as: stone inscriptions. Pliny mentioned in his Natural history, the only individual mosaic worker who became a celebrity after his death, he's the Pergamene artist Sossos who made the panel of the pigeons drinking from a vessel. Most of signatures consisted of only the...