Kirsanov Mikhail Gerasimov

[John Preston]

Hello!

Tell me, please, for the authenticity of this work.
It is proposed to be inexpensive, but there are doubts.
In the center of the picture and in the left corner of the blue brushstrokes of the sky in ultraviolet radiation shining black, the signature of such does not glow, but it turns out that its color is not from the palette of the picture.
On the back of some foreign label.
Size - 30,5 to 46,5 cm, oil on cardboard.
The seller said he bought it several years ago in an antique shop in Germany.