Blue and white porcelain vases from the Dutch factory Petrus Regout & Co., based in Maastricht. Key details Manufacturer: Petrus Regout & Co. (later De Sphinx), founded in 1834 in Maastricht, Netherlands. Design and provenance: These pieces often featured patterns inspired by Japanese or Chinese blue and white porcelain. Historical context: Although similar in style to "delftware", authentic delftware must be produced specifically in the city of Delft. Regout pieces are sometimes called "Maastricht pottery". Period: Similar objects typically date from the late 19th and early 20th centuries, with some markings indicating production around 1850–1910. The manufacturer's and probably the master's mark are written in Javanese Cyrillic letters on the bottom. These beautiful collector's items come from family heirlooms, completely preserved, in good condition. We can post it carefully packaged, in an insured, registered package.