What I have here is a small glass bottle. It no longer has a lid, but it has this strange glass inner wall near the top of the inside of the bottle. It is clear, and stands 2 1/2" tall and the diameter of the opening is about an inch and a half. There are no company names on this bottle. On the bottom is inscribed patd 1759866. I'm really curious as to what this bottle was really used for. I've come into quite a few vintage and antique items lately, mostly glass- and I am just getting to know about the world of jars, bottles, and other breakable things. Grateful for any help, thanks.