F.P.Riznichenko, please help with the assessment
 

Good day,
Got such a sketch from her grandmother.
Size: 14 * 19
oil
At the technical picture shows a slice. It seems , cardboard or something
Legible signature ( Riznichenko ), year, it seems , 1909
There is a potential buyer , but he wants to call the price we. Naturally, with such amount to anything significant are none , but absolutely for nothing too do not want to give away , and it makes no sense ...
Tell me, please , how you can request not to zatryahivatsya ?

Thanks in advance!

FP Riznichenko this size sold for around U.S. $ 1500-5000
There is a belief that " my grandmother "? :)

Compare the signature is taken as the time from the landscape on cardboard size 17.5x14.5, which, by the way, at a different time to sell and Sotheby's, e, and Bonhams, e,
and Auktionsverket, e:

And what if a first do?

With it, too, need to compare this signature on his paintings often found.

Full :)
I remember when I was little , she was hanging on her wall. And how much is in it - a mystery ...

Well, the second shape is similar. Our little more casually , really ... By the way , considered the signature on this , I could not understand what the letter at the beginning - whether the "H ", or "A" ... And where does Fedor ? Now it is clear - " Theta " :)

I forgot to mention. We currently do not have any paper with the expertise of authenticity, but the parents as an acquaintance showed it to some expert from the Hermitage , which said that the authorship is undeniable. Without me, it was , I say only the words of the parents.

At the moment, from different sources have heard figures with a spread that is somewhat disconcerting ... I'd like to find out ...

Thank you very much enlighten :)

Roughly here:

Yes, it is already clear about, thank you.
Although the spread, too many ...
But at least we know the scope, in the manner

The spread also depends on you: it will be an expert opinion - sell more expensive.