Michael Sweerts ( 1618 - 1664 ) was a Flemish painter. Michael Sweerts s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2623.81 USD for Portrait of a gentleman in 2004 to 411929.48 USD for Portrait de jeune garçon au chapeau in 2004 , based on the size and medium of the artwork.