Watercolor Yevgeny Borisovich Serebryakova

[Благодаров]

Please be advised:
1) where you can see, if possible, the son of Zinaida Evgenievna Serebryakova - Yevgeny Borisovich Serebryakov (1906-1991);
2) Please rate this his watercolor "Ozerki. Dimensions: 32,5 x 45,5;
3) and explain the significance of these figures in the description (on back).

Expertise no. But there is a signature in the bottom right corner in pencil (unfortunately the photo shows bad, sorry) and on the back of a full description and year.
I would like to see the professional and business proposals.
Thank you.