The Mystery of the unknown Artist

An unknown Polish Artist created this picture in Camp Wildflecken. He gave it to his nurse - Marie-Louise Habets - for the good nursing. Later he died and was buried in at the Polish cemetery in Wildflecken.

Years later M.-L. Habets gave the picture to her sister but forgot to tell her the name of the artist. Now a copy of the picture found its way back from Japan to the little museum in Wildflecken, where tzhe original once was created.

The artist didn't sign the picture with his name but with the following sign.

Does anybody know to what artist once used this sign? If you have any idea please >> contact Janie