Skippings Fine Arts has dated this piece to the 1950s.
It is also titled "Easter Island Moai Statues" and dated 1954 on the verso by a later hand. It is likely that the former owners were privy to information of which the source has since been lost.

Coetzee was indeed influenced by Dubuffet, and spent the 1950s in the UK and in France, where our painting was acquired.
The artwork is painted with thick impasto on canvas, and was laid down on hardboard at a later date. Measuring 28 x 22 .5 cm, the overall framed size in a period frame is 38 x 34 cm.
Skippings Fine Arts has dated this piece to the 1950s.
Modern french & continental pictures selected by a former french auction house expert
You can view the stock and full dealer information on the Skippings Fine Arts Profile Page