Sold for A$45
Amber Stoppered Poison Dropper. 60 ml. (European). Poison. Amber. Flare lip with pouring spout. Stopper has grooves that when turned to line up with the lower spout allow a drop of the contents only out at a time. Amber. 60 ml. 120 mm. 1920s
Excellent. (8.9). Grimy inside, this should soak out. Minor marks only otherwise. Ingenious design, the stopper has a thin groove on one side from the bottom that only goes up far enough to reach the lower pouring lip. By lining this up, a very precise and minor flow would come out. Then, the other side of the stopper has a wider groove, but this does not start at the bottom, it starts at the top and goes down about two thirds of the way. The back of the neck has a recess in it, lining this groove up with the recess would allow for a larger flow as the groove is wider. The stopper has a groove across the top to aid in aligning the stopper for pouring. Fantastic item.. Estimate: $30-50