This is a lovely Antique Tübinger Igel Hedgehog / Hobnail Glass German Beer Stein. The hinged metal lid is surmounted with an eagle, a raised view of Tubingen and an inscription around the outside which has a Military reference to an individual and dated 1904.
Measurement 0.3l is inscribed to the side of the glass.
Measures 13cm tall including the Eagle x 11cm diameter.