Vintage Ambrosia Brewing Co. Chicago, NECTAR Beer Tap Knob. Porcelain, three color on white roundel in a chrome plated ball handle. The brewery was located at 3700-10 S. The building has been demolished. Marks; Ambrosia Brewg Co. No problems with the porcelain. Dits, scratches and losses to the chrome finish. Three shallow dents, see photo … more