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1. Author unknown (no signatures on the painting no)
2. Oil on Canvas
3. 55sm/46sm
4. The beginning of XX century (20 years, Tide)
5. Good condition (one scree size 3smh3sm)
6. Not Available
7. Photo attached
8. Was inherited by

I can still make an analogy.
My friend asked to evaluate the portrait, which she had inherited from her grandmother. And she saw it all the time her - about your case.
Portrait of the 19 century, a woman's face. But. Signed - Ivanov. And they like the family was believed that the same. I showed the specialists and they with one voice - really "Smith", but the signature is quite different and even manner still different. So the diagnosis - unknown artist 19 century (and perhaps the signature then someone had written) price of $ 1500-2000 and the realization of one's hand.
I think you have something in that spirit.