Thomas De Keyser (after) ( 1596 - 1667 ) was a Dutch painter. Thomas De Keyser (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2350 USD for A Portrait of a Gentleman, Bust-Length, wearing a Black Cloak in 2004 to 7154.1 USD for A PORTRAIT OF A LADY, STANDING THREE-QUARTER LENGTH, WEARING A BLACK DRESS WITH A MILL-STONE