Mathieu Le Nain (after) ( 1607 - 1677 ) was a French painter. Mathieu Le Nain (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 7138.61 USD for PORTRAIT OF A MAN, HEAD AND SHOULDERS, SAID TO BE THE PHILOSOPHER RENÉE DESCARTES in 2004 to 20351.4 USD for Portrait of a boy, bust-length, in a grey coat and a white necktie wit