Dirk Stoop (attributed To) ( 1618 - 1686 ) was a Dutch painter. Dirk Stoop (attributed To) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1800 USD for Cavalrymen protecting the flag, a skirmish beyond in 2005 to 4841.55 USD for A cavalry engagement in 2007 , based on the size and medium of the artwork.