Fantastic Vintage Turquoise Blue Glass Mug or Stein

This is a really cool old piece of glass. The glass look very much like the glass used in vintage canning jars, and has bubbles and imperfections in the glass like older depression glass pieces. It is a rich turquoise color and very heavy and thick. It is a stein or mug and measures 4.5 inches tall and 2.75 inches across the rim. It has one small mark to the glass on the bottom rim. I don't know the age but it looks like a good old piece.