I have no information on this piece as there are no markings to help identify who the designer was
If you have any information on this piece, do get in touch
30/10/2019 – This site suggests that it is a Tretchikoff?
Lady and baby wall plaque by Unknown
Chalkware statues 
I think this is a piece by Gino Manca (1920-1985), an Italian sculptor that lived and worked in Norway.
A very short Norwegian mini-documentary can be seen here, full with a mind boggling, stunning collection of his exotic figurines.
https://www.nrk.no/ostfold/den-sorte-damen-er-hot-igjen-1.7123997
Unfortunately there is very little information to be found in the english language
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Hi Arjen. Wow thanks very much for getting in touch. The images are indeed amazing. Another great place for me to research and worthy of a new section on the site I think.
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On Instagram you can find some of his work with #negerdame
https://www.instagram.com/explore/tags/negerdame/
Another link I think you will enjoy is
https://valentinmuseum.at/aktuelles/eisenbeisser
Although these are ceramic and not made of plaster, they sure are magnificent!
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