Many sites say this is a self portrait by Sisley; others say it is a portrait of Sisley painted by Renoir. (https://commons.wikimedia.org/wiki/File:Pierre-Auguste_Renoir_110.jpg) The original seems to be in the Foundation E.G. Bührle Collection in Zurich, where it is attributed to Renoir. "In 1862 August Renoir made the acquaintance of Alfred Sisley, Claude Monet and Frédéric Bazille in the studio of the Swiss Charles Gleyre in Paris, they being his fellow students.... In 1864, the 27-year-old Renoir paints his friend. Alfred Sisley, the son of a then still well-to-do English business man in Paris, is a young married man.... The fact that this half-length portrait was commissioned by Sisley is shown by the provenance of the picture, in clear contrast to the picture of Sisley that Bazille paints lying, smoking a pipe and which is a genuine improvisation on the part of a painter friend. (http://www.buehrle.ch/works_detail.php?lang=en&id_pic=61)