Juan Bautista Martinez Del Mazo ( 1612 - 1667 ) was a Spanish painter. Juan Bautista Martinez Del Mazo s works have been auctioned off multiple times, with realized prices varying according to the size and medium of the artwork, for instance of 120894.59 USD for CUENCA PROVINCE CIRCA 1613 - 1667 MADRID PORTRAIT OF DIEGO DE SILVA Y VELAZQUEZ in 2011