Tethart Philipp Christian Haag ( 1737 - 1812 ) was a Dutch painter. Tethart Philipp Christian Haag s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1233.19 USD for A HORSERIDER IN A RIDING-SCHOOL in 2005 to 8750 USD for A SOLDIER LEADING A HORSE TO A BLACKSMITH ('CHEVAL LIMOSIN') in 2019 , based on the size and medium of the artw