Antique English Apothecary Phial Bottle River Thames London

A wonderful early English phial found in the river thames sometime during the 1980,s. It was then sold at Charing Cross Antique Market with accompanying mini sign. The bottle tapers slightly to form a conical shape. The lip was crudely finished and left a small pimple, it is not a chip. All over rainbow iridescence to the surface. The sign says early 17th century but I would suggest a slightly later date. Height 2.75 inches.English C1680