HI, Well the bottom has a valve mark, so with the mold ( or neckring seam ) near the finish; I have to thing it was made on an HMB machine. It certainly looks like an early milk because of the squared finish. It was used before the rounded role type. Sorry I couldn't be of more help. RED Matthews
I always thought bottles with that shape were a "special" type of milk bottle, but couldn't find much proof. But here's a Borden's Condensed Milk bottle with a very similar shape, but a typical capseat milk top...
So I'm gonna say the first bottle is DEFINITELY POSSIBLY a dairy bottle of sorts. And I agree it was made on an early "semi-automatic" machine, what with that valve mark on the base (which by the way, is a product of the machine which was used first to manufacture wide mouthed bottles, especially milks!). The only thing that throws me is the finish, which looks like half food (since it's squared off) and half milk (since it has a seat inside for a cap). Very interesting bottle and discussion!
I would say that every other bottle posted in this thread are foods though. I see a pickle, some olives, and others. Most seem to be made the same way, like many TOC post BIM/pre ABM foods.
Nothing in the lineup appears to be a milk bottle.
Back in the day, before the age of refrigeration, I'd imagine that the Keys didn't enjoy much access to fresh milk. The limited land area probably wouldn't support much of a dairy herd, and in an area like that pastureland might have been considered a waste of space to begin with.