Johann Matthias Ranftl ( 1805 - 1854 ) was an Austrian painter. Johann Matthias Ranftl s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1678.95 USD for Dog portrait in 2003 to 24750.55 USD for The Zither Player in 2013 , based on the size and medium of the artwork.