Found this bottle in the dump in my backyard, most things there are from the 40's, but the bottle I found next to this one was mysteriously from the 20's I believe.
The trademark on the bottom is Brockway Glass Company. They started using that trademark around 1934, so your bottle can't be any older then that. I don't think the 1 is a date code, but I'm not sure. It's probably either a plant number or a mould number. If it is a plant number then it was made in Brockway Pennsylvania. I hope this helps.