In the search or not?

[yozhik]

Dear experts'll show how I know the picture is stolen or not ...
a picture Repin IE bouquet of flowers 1878
I got by inheritance, I want to sell it but do not know skutayut me or not ... fumbled on the Internet found information that this picture is on the house-museum Abramtsevo ... thought that I might be a fake on your hands ... but if this painting for 40 years, passed from generation to generation, I think that I can and the original .. So how do I know what if it stolen!