The smallest one seems awful small for that.I would say a lot these are oyster bottles. I found some that were embossed, paper labelled ones were produced later on.
Cliff
I doubt they're dairy bottles because embossed/ACL ones never show up. Dairies almost never used single-use glass bottles, especially not that far back, so you'd think the standard would be to mark them. I've always assumed these were for some sort of condiment or something similar, but not sure what since I've never seen a labeled or embossed one.There has to be lots of dairy / milk bottle collectors that should know. I don't collect milk bottles but I have seen similar ones before at antique malls. I thought they were heavy cream bottles. Or, just small milk bottles (like "single serving", so to speak).