Francesco Guardi ( 1712 - 1793 ) was an Italian painter, one of the last of artist of the Venetian school of painting. Francesco Guardi s works have been put up for auction numerous times, with realized prices greatly surpassing estimated prices, varying from 13683.21 USD for The Isola della Beata Vergine del Rosario, Venice in 2002 to a remarkable record 20224589.03 USD for Venice: the Rialto B