Not enough of the neck is here to decide between biconical and conical axis. This sherd features anywhere between at least three vertical furrows, unclear because of the location of the breaks. Between each furrow is a raised, polished band, which may also be referred to as an embossed line or cannelure. These process of producing these furrows has produced corresponding impressions on the internal surface. The external surface appears to have been modeled first, cannelure and all, the polished, and then the polish/slip layer was flaked or scratched off the furrow areas (this adds a lot of accent to the polished cannelure). There are no evident rotational striations. Polish marks are vertical on the external cannelure and horizontal on the external neck. The internal surface is approximately 10% covered in white corrosion respectively. Pavel tells me that this kind of cannelure is more popular during the Iron Age, but cannot be isolated to any particular LM period. Breaks are generally smooth. External surface is in fact a mottled color, with browns and blacks.
From Interior to Exterior