Old Holland paints began production in 1664. I visited the factory in Driebergen a few years ago. They were very informative and showed me around the factory. There is some machinery for milling pigment but a lot of the work is still done by hand. They made the point that they do not use any of the pigments that are used in the formulation of paints produced in China and preserve the traditions of manufacture. They also noted that even the material the tubes are made of is specifically used with the artist in mind - that for artists there is a tactile element to squeezing the paint from the tube.
I’ve been using Old Holland paints since my student days at the Royal Academy of Art in Amsterdam (Rijksakademie van beeldende kunsten) through the 1970s. I still have some tubes of oil paint from that time. (Two are still soft.)
The mixed white texture has not suited my particular use. I found the consistency dry and chalky, less 'oily' than the other acrylics, and difficult to manage. I couldn't find a medium that made it workable to my needs. I'll certainly stick to the Old Holland New Masters brand but buy the Titanium White in future.