https://www.christies.com/lot/lot-4800809/?intObjectID=4800809
Raffaello Sorbi (Italian, 1844-1931) , The Chess Players | Christie's
the chess playersraffaello sorbiitalian18441931
https://www.sothebys.com/en/auctions/ecatalogue/2016/19th-century-european-paintings-l16101/lot.20.html
(#20) Raffaello Sorbi
20raffaellosorbi