I have a 6 oz. clear bottle from G. A. Williston & Son, Bay City, Mich. It is marked Min. Contents 6 Fl. Ozs. Near the bottom of the bottle is printed "registered". Can any one tell me when this company was in business and if this bottle is worth anything. I live in West MI, and this bottle came in as a donation to a private humane society that I work with. It caught my eye because I was born and raised in Munger, MI.