That sure is an interesting bottle. I would guess some king of perfume, snuff, or maybe even an old opium bottle. Try posting it on this site http://www.antique-bottles.net/forum/. Someone there is bound to know what it is. HH!
It looks somewhat similar to the "Gulden" bottles. We call them inchworm bottles. You probably looked at the bottom, right?
This is the company that still makes Gulden Mustard. At the turn of the century the older Gulden turned the business over to his son who decided to expand the business. The ones we find down here in Eastern Pa. are about the same size but the bubble configuration goes all the way up. The son Gulden sold capers in these bottles at the turn of the century on up.
aloha......johny mc. www.theadventurelodge.com