Carlo Erba ( 1884 - 1917 ) was an Italian painter. Carlo Erba s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 891.65 USD for Man portrait in 2005 to 13091.1 USD for Paesaggio con pioppi, 1909/1910 circa in 2007 , based on the size and medium of the artwork.