Help assess and learn about the author of the Savior

[uriart]

Employees of the State Tretyakov absolutely have no information on pricing and sometimes they say that the mind vzbredet.
In order to properly assess the need to seek the results of previous sales and look at it.
The fact that the lost support with the signature, the big minus.
Although the bust, the quality of performance does not allow to doubt the authorship Antokolsky.