Gouda. Holland.
Hersteller / Manufacturer.
Known dates: 1610 to current day.
Known to have produced steins in 1941
Purchased the assets of Plateelbakkerij Zuid Holland in 1964.
Reference: Royal Goedewaagen Factory Gouda-Design
Impressed mark on stein base. Dated 1941 
"Grotius" #157 pattern featured plate,probably dated immediately post WWII. 
Basemarks on "Grotius" #157 pattern on featured plate. 