P. Pavlov, watercolor, 1916.
 

Good evening!

Please evaluate and attribute. Pavlov Peter?

Size h cm

Sincerely, Via.

Dear participants than you can wash it upili and shades? And is it like performing in Peter Pavlov?

Wash clean from dust and obscurities, but it is better to consult specialists in the Museum. From personal experience - it's inexpensive, but not quickly.

As for the second part of the question, though Pyotr Petrovitch Pavlov was a photographer, this watercolor, apparently, belongs to him.

This conclusion can be drawn
from family ties http://zrazhevsky.krasno.ru/Oldfotos/PavlovP.htm -link to the biography
-the remainder stamp on the cardboard
On the reverse side is the print shop private merchant Joseph of Piety: "Estampes et couleurs | JOSEPH FIETTA | St. Petersbourg | Grande Morskaya, No. 36".
Link to Gelos, where examples of the photo to the Mat from the dealer, i.e. I mean that photographers have used the services of this shop often, because a lot of photo with these stamps.
http://www.gelos.ru/month/nov2010book/toplot.shtml

P. S. But this is only version, discrepancy in that store Peter and photographer Moscow. But alas, examples of his work did not find more appropriate for Your watercolor P. Pavlova is also not found.