Cornelis Ploos Van Amstel (after) ( 1726 - 1798 ) was a Dutch painter. Cornelis Ploos Van Amstel (after) s works have been put up for auction numerous times, with realized prices varying from 56.77 USD for Naar links kijkende stier in 2005 to 461.35 USD for Klavierspeelster in 2011 , based on the size and medium of the artwork.