M.Dobuzhinsky? Could this be it?

[Sergey11]

It's worth it to carry a picture supposedly Mistislava Dobuzhinsky for attribution ?

Signed lower right applied later painting a picture (front sign the catalog corresponds to a sample of his signature that he put on his works until 1920 ) Unfortunately the signature can not be sfotat well as not trying to
on the reverse side also has a signature ( like his usual signature on paper)
That tell me?