Empty brown glass bottle with metal screw top. 1/2 oz capacity. Oblong shape, two curved sides and two flat, one with ridges and "1/2" stamped at the top. Bottom of bottle is stamped "1/2 oz. U. S. A." Cap has small vertical ridges around edge and a smooth top. There is a band of what appears to be adhesive residue around the un-ridged side of the bottle's body.