These series are from the former GDR. I bought most of them in The Netherlands, assuming they were typical Dutch. Discovering a similar piggy bank with a sticker of origin pointed out my misunderstanding. Not Dutch! Here you see the significance of maintaining the stickers, never rubb them off! It's part of the provenance.
Gray surface. Patterns of stripes and flowers and a 'Gouda like' trumpet nose. Period: 1950-1975.