Dish - Pottery Osirus - circa 1935 18.0 cm D Made in Gouda by Pottery Osirus. This very small factory was based in Gouda. It was founded in the mid 1930's by Van der Kist and made high glaze and cold glazed items. This very unusual shaped dish with a raised spiral effect is a cold glaze. No marks on the base. With grateful thanks to Ron Tasman 'The Gouda Pottery Book' for the information and for enhancing the image of the dish for us.