Is it possible to identify the author?
 

Is it possible to identify the author?
Is it reasonable to turn to the experts?

Paintings got by inheritance of kin.

Thanks in advance for suggestions and advice.


1).
60h65 c /m Unsigned

2).
60x70 S.W.
in the right corner

3).
30x50 P.S.1923 in the right corner

4).
65h30, 1919 in the left corner