Old Food Coloring Bottle

This is a perfectly intact bottle of Burnett's Liquid Color. On the bottom is 11.., and that is all. The top has a tiny one drop at a time type opening. There are ridges on the sides, you can see them if you enhance the first picture. It is a clear bottle. Do not know the date and the seams go over the lip. I am pretty certain that this is a food coloring bottle. Mr. Burnett was considered an expert on mixology to get just the right taste of extracts, making him the go to guy. Also believe he did food color. Bottle measures 2.5" x 1" x .5".