At the end of 2005 , his heirs sold the picture to the Mozarteum in Salzburg for 250,000 British pounds .
Albi Rosenthal died in 2004 .
At the end of 2005 , Albi Rosenthal 's heirs sold the picture to the Mozarteum in Salzburg for 250,000 British pounds .
Albi Rosenthal died in 2004 .