Vintage pair of flowerpots, porcelain, glaze, painting. Netherlands, late 20th century.The items are marked Petrus Regout, Maastricht.Glass and ceramics factory founded in 1836 in Maastricht by Petrus Regout senior (1801-1878). One of the largest Dutch tableware manufacturers from the second half of the 19th century until World War II. In 1899, the company, previously known as Petrus Regout, was renamed "Sphinx". (Sphinx). By that time, the company had been using the image of a reclining sphinx as its logo for twenty years. In 1913, the year of the peak of the Maastricht pottery, they employed about 7,000 people. This number represented almost 70% of the total industrial employment in the city. In the following period, the company encountered difficulties, which eventually led to a series of mergers after World War II. The most important of these was the merger of Sphinx and Société Céramique de Maestricht in 1958. Sphinx ceased producing tableware in 1969.