I stopped at a large yard/barn sale this morning on my way to work. 37 hay wagon loads of junk! It's the kind of sale that may have a few diamonds in the rough if you know what to look for (which I don't). I know nothing about porcelain multi-parts but these were $2 each and the bottle was $3. Can someone tell me anything about these insulators? I don't see any markings on them, but they're pretty dirty so I can't be totally sure there isn't something somewhere. They're about 13" wide and 12" tall.

I know nothing about bottles, either, but this one struck me as being pretty old because it's pretty crude - it's got a bunch of bubbles, a couple of firebrick bits and other imperfections. I don't see any embossing.