Looks like no one knows what this one is, but it seems to be a pretty desirable bottle http://www.westernbitters.com/2009/12/unsolved-mystery-of-none-genuine-bottle.html
Looks like it was a knockoff of Hood's Sarsaparilla, and they also had a knockoff Warner's Safe Cure. There's this thing too, not sure if it's trying to mimic anything in particular