Norm Heckler said it best!
"Early Bottle or Decanter, America, 1820-1860. Cylindrical with three ribbed neck rings, white milkglass, applied double collared mouth - pontil scar, ht. 9 1/2 inches, base dia. 3 1/2 inches. We have not seen this bottle before. It's early and perfect."
I got it at the last Heckler auction, I don't recall any other examples being offered. There was a 1991 sticker on the base... For whatever it's worth.
I have no idea, I just remember posting it here in the auctions section along with about 20 or so of their other bottles. Not my area of expertise as we all know, this is your field to say the least....