Here's one on ebay right now. Merchants
Value on these depends on whether it is smooth base, open pontil or iron pontil as well as color. They are notorious for having small dings on the lips and base corners, so a mint one gets top dollar. Most of them are very crude, whittley and just plain gorgeous! I would say $175-250 if mint.
I have no reservations whatsoever about guessing on bottle values. The problem is, I don't want to hear it if the bottle doesn't fetch the price I guessed, be it high or low. So.. that's a nice looking bottle. []