Isaac Spackman (attributed To) ( 1700 - 1771 ) was a British painter. Isaac Spackman (attributed To) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 611.93 USD for basso-relievo study of a Game Bird in 2005 to 4781.03 USD for Untitled in 2010 , based on the size and medium of the artwork.