I was pretty sure it was a reproduction, and I'm even more sure now that I see fresh-looking, perfectly formed metal wires in the body of the vessel.
See attachments. One shows what I think is a metal wire in mid-body as well, so the whole thing was formed with them.
What do you think? I've never heard of a
core-formed vessel with metal wires being
part of the formation process.
Otherwise, the bottle's construction looked quite right. What gave it away as a
fake was that the top wasn't quite right, and the vessel was crazed instead of weathered/pitted.