Seattle Seahawks NFL glass beer steins mug. Very likely vintage. Heavy! No flaws

This Seattle Seahawks mug is glass, a sturdy and heavy duty beer stein. In doing research, haven't found this exact mug. This leads me to believe the owner will likely have a unique mug not owned by your neighbors. There is a 17 stamped on the bottom. Would be confident this is at least 16 oz if not more. This is built with quality and will hold a cold beverage cold or maintain a hot coffee. As Matthew works in health-care, be aware, this isn't light weight so would not be good for the frail unless used as decor.