Help in assessing

[sergejnowo]

picture judged as a finger to the sky. So purely hypothetical.
For me, this work is the middle of 19 - th century or later, in the style of old masters ages 17-18 with a distinct "wind" of the second half of the 19 - th century. Details traced, in comparison with the great, and simple. Yes, and sometimes completely lack of detail. On the face of a certain level of naivete.
It affects safety. In those places where there are no "mechanical" damage, bends scree, the paint layer remarkably well preserved. Rather pigments are clean from dirt and darkened oxidized remnants of the old preservatives.