“At the Carnival“, this painting was executed in the early 20th century  and was attributed to the hand of Russian painter, art critic and writer 
Pyotr Alexandrovich Nilus (1869, Busheny Estate, Podolsk Governorate, Russian Empire –  1943, Paris) – Russian painter, art critic, and writer.

Since it is difficult in the moment to send the painting to Russia for expert analysis, we are forced to sell it as is, that is, exclusively as attributed to Pyotr Nilus.

Full biographical information about the artist read in the Wikipedia in Russian under following link:

https://ru.wikipedia.org/wiki/Нилус,_Пётр_Александрович

and in English:

https://en.wikipedia.org/wiki/Pyotr_Nilus

Provenance: French private estate.

Literature: different Russian, Ukrainian lexicons, in German: Thieme/Becker; Vollmer; in French: Bénézit.

Inscription: signed in Russian lower right. Signature was checked with UV Lamp.

Technique: oil on cardboard, original period frame.

Measurements: unframed 14 1/8" x 17 7/8" (36 x 45,5 ), framed 20 1/4" x 24"(51,5 x 61 cm).

Condition: very good.