Glossy red tableware with moulded scenes and potters' stamps.
Samian (terra sigillata) is the unmistakable Roman fineware: a rich glossy red-orange slip over fine pink-red fabric, mass-produced in Gaulish and other workshops from the 1st century BC to the 3rd AD. Plain forms are smooth and lathe-crisp; decorated bowls carry moulded friezes of gods, gladiators, animals, and scrolls.
Two gifts for the cataloguer: form and stamp. Vessel shapes follow numbered typologies (a footring or rim profile can identify the form), and many plain vessels carry the potter's name stamped in the base — a stamp can date a sherd to within a couple of decades.
Photograph decoration in raking light and any stamp dead-on. Record fabric colour in the break, slip quality, and estimated diameter from rim or base curvature. Even a thumbnail sherd of samian is identifiable — never discard one as 'just red pottery'.
Identifying pottery and ceramics
Identifying terracotta figurines
Identifying amphorae and transport pottery