Joao Penalva ( 1949 - ) is a painter. Joao Penalva s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 127.71 USD for Silhouettes in 2005 to 12307.69 USD for Looking up in Osaka (Hacchobori) in 2017 , based on the size and medium of the artwork.