Portrait (author, rating?)

[MariyaKina]

Dear experts forum, tell me something on this portrait. The author? Possible cost?
Size h cm, oil.
On the reverse side of the canvas you are viewing the 1913 figure.
Condition - there are some small chipped paint.
It was without a frame. Found when parsing things at the old country house, formerly owned by artist / teacher of children.art.school, Moscow, but that's not his style).