Geometric Period
If you think this is a naive art, think again. At that time, there were works of art known for thousands of years, from their antiquity, corresponding to the century VII b.c.
You can find pictures with explanations:
https://www.youtube.com/watch?v=Uwpdiq9mYME
https://www.youtube.com/watch?v=T9TAY70EEQk
Une vraie souffrance de décoder cela en 40x40 mais un vrai plaisir de voir cela en 40x40.