Lotti Van Der Gaag ( 1923 - 1999 ) was a Dutch painter. Lotti Van Der Gaag s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 5405.94 USD for Gatepaan in 2004 to 13731.95 USD for Tonglach in 2010 , based on the size and medium of the artwork.