This bottle is about 4" tall. It has a straight column base approx 2+1/2" then bulbs out to form a "hat" that vaguely reminds me of pictures of "Old Baghdad". This bulb narrows to a small opening which is just about wide enough to put the very tip of my little finger in. It appears to be hand (mouth?) blown into a mold and has several air bubbles and fault marks. I think it might be an old perfume bottle but I can't find anything like it on any Google search page. Does anybody have an idea on what it might be? I found it in my garden in France so it might be a French bottle.