Would love to know more about Pasaan factory and Leontine design

I might have been a bit rash buying these because although there are six of them, they are missing their saucers. Still, the design is so charming I couldn't help myself. As you can see in the iimages, the cups are porcelain and although I've only photographed one, they are all in good condition. They have Pasaan on the base but all I find when I google Pasaan are items for sale on our Dutch trading website (Marktplaats) and eBay, which makes me think the factory doesn't exist anymore. I also can't find any other examples of this particular design.

Does anyone know a little more about the history of the factory and could you help me date these? (I don't ask much, do I :-))