Hi Hokeypix, I was really suprised when I saw your Ert's Bottle. I have one as well.[] Mine doesn't have "this bottle not to be sold' on it, and appears to more crude. I posted some pictures a while ago, I'll have to see where they are. I wasn't able to find any information about Erts however.[] My bottle has whittle marks from the mold, and the neck has twists and stretch marks, and there's some black slag in the glass from the manufacturing process as well, like I said, your's appears a little newer. Where did you aquire your's?
I picked it up along with a few other boxes of bottles at a yard sale near Woodstock, NY. I think the guy dug most of these up....if you find out any more info, please let me know!