Please help to identify the author

[SergeiM]

Please help determine the time of writing, painting , and the possible authorship.
Picture, let's say, in good condition and neochen see signature , without a restoration is not possible. However, the location of the signatures of more or less possible to identify - the upper left corner of the picture .

Some details of the picture distorted ( for example , the right hand ), others did not see , because of the darkening varnish and air pollution.