Ignaz Unterberger ( 1742 - 1797 ) was an Italian painter. Ignaz Unterberger s works have been auctioned off multiple times, with realized prices varying according to the size and medium of the artwork, for instance of 194931.3 USD for ROME, THE GROTTA DEI VINI (OR TINELLO) IN THE GARDENS OF THE VILLA PINCIANA, A BANQUET GIVEN BY PRINCE MARCANTONIO BORGHESE IN H in 2003