Portrait of a boy, Louis Caravaque, circa 1745 (?)

Was att. As peter iii or peter ii's portrait, possibly elizabeth in men's dress. Object Type: painting. Genre: portrait. Date: circa 1745 (?). Dimensions: height: 135 cm (53.1 in); width: 89 cm (35 in). Medium: oil on canvas. Collection: Russian Museum. Louis Caravaque 002