Gerrit Schipper ( 1775 - 1830 ) was an American painter. Gerrit Schipper s works have been put up for auction numerous times, with realized prices varying from 4221.55 USD for PORTRAIT OF JEAN-BAPTISTE TOUSSIAINT POTHIER (1771-1845) in 2004 to 6900 USD for PORTRAIT OF A GENTLEMAN IN HIS LIBRARY in 2006 , based on the size and medium of the artwork.