Located in the Museum-Preserve "Gatchina" http://rusmilestones.ru/day/show/?id...=3&print=Y
  Sandro-Thank you, may in Kiev to try to examination ... because chemical analysis should show prim.god?

Mongol, at first - chemistry, then iskustvovedcheskaya ...

Just some kind of obsession. Throw me a link, where the show is the portrait, but this museum

Here are two more similar on a portrait of girls performed Rotari.Iz private collections in zapade.Odna of them sold as a poster. And the portrait of the artist.

rolls, you have the opportunity to lay out all the portraits side by side. Because cognitive and visual.

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IrinaC, will be grateful

Sorry, that's compared. Left work of Rotary, on the right "copy".
And you think the copy is so good, that should make any examination and find out the name of a copyist?
Whom can call the author, for example, Kiseleva or Gladkova?
Do Rokotov?

Good links that weigh a bit, you can and leave:)
Here are two more in the Russian-speaking inete: http://artru.info/il/6548/
http://www.kamenobr.ru/galereya_006_03.html in the English language has not yet found.
    I have a question for the distinguished experts: employers could be persuaded to print it? Maybe the reverse side of the canvas will give more information at the angle seen in the middle of the square of 38h29sm even cracelures outlined. Maybe back pasted cardboard. I would also like to clear the mud, but as I understand it, do it to a professional restorer. : p

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And if this is not a copy? Then a comparison, perhaps, meaningless. In the picture the emphasis placed on the face (you think that poorly written?) Strongly lose because of pollution. Another completely changed the angle of incidence of light (why such difficulties for a copy?), Resulting in folds propiska say on the shawl is absolutely different. It is interesting that the examination would be approximately a year, because it will affect the price. Well, perhaps interesting to the process of attribution:) From HC. responded to.