This is an attractive piece of vintage studio pottery - on a stylistic basis, dating to around the 1960s.
It is has a rough golden coloured stoneware colour on the reverse - and on the front has a grey combed glaze with a strange abstract pattern scratched into the surface.
The pattern kind of reminds of me little fish.
In good vintage condition with no damages.
It is 5 ½ inches square. Unpacked it is just over 300 grams in weight.
There is an impressed studio stamp on the back of the little plate - sadly I have not been able to identify it, but have photographed it for your inspection. The mark looks like an impressed circle with a line through it.
It is a beautifully made, unique piece of vintage pottery, and listed at a fair price.