Shape equals cargo.
Amphora forms are tied to their contents and origin — wine, oil, fish sauce. The rim, handle, and toe shapes classify them, and the standard form series (Dressel’s numbered types and their successors) turns a profile into a date and a trade route.
Stamps on handles name makers or estates; painted inscriptions (tituli picti) occasionally survive to name the actual contents. Fabric analysis pins the production region even on plain body sherds.
The toe — solid spike, ring foot, or rounded knob — was for handling and stacking in ships’ holds, and it survives well; a toe plus a rim can classify a vessel with no body at all.
Measure rim diameter and draw the profile if you can. Even a single stamped handle is worth recording carefully — amphora stamps are indexed, and yours may match a known workshop.
Identifying pottery and ceramics
Identifying terracotta figurines