MONTREAL —A second painting lost during the Holocaust worth tens of millions of dollars today is expected to be restituted to a Montreal man, the descendant of its previous Viennese Jewish owner.

Litzlberg on the Attersee, a 1915 masterpiece by Austrian artist Gustav Klimt, valued at between $29 to $44 million, will be returned to Georges Jorisch, the state-owned Museum of Modern Art in Salzburg, Austria announced April 21.

The oil was seized by the Nazi Gestapo secret police after Jorisch’s grandmother was deported in 1941, experts brought in to back his claim on the painting confirmed.

The restitution still must be approved by the local assembly of Salzburg province, but that is expected to become official on July 6. It has been established that Jorisch, 83, is the rightful and sole heir and the provincial government has recommended its return.

Last year, another Klimt landscape, the 1913 Church in Cassone, was returned to Jorisch by a possessor whose identity was never revealed. It was subsequently sold at auction in London for $45.4 million. The proceeds were divided between Jorisch and the other party, according to an agreement they reached.

Both works were in the collection of Jorisch’s great-uncle Viktor Zuckerkandl, a steel magnate before World War II, and his wife Paula, who are believed to have bought them from Klimt.

Jorisch, a retired photography store owner, has lived modestly and obscurely in Montreal since immigrating here from Belgium in 1956.

When the Zuckerkandls died childless in the 1920s, their home and its contents were passed to Viktor’s sister Amalie Redlich, whose daughter Mathilde was Jorisch’s mother.

Jorisch fled Vienna with his father when the Nazis entered in 1938. They spent the war in hiding, including two years in Brussels. His mother and grandmother remained in Vienna, were deported to the Lodz ghetto in Poland in 1941, and did not survive.

The art collection was put in storage with a shipping company by Redlich in 1938. After the war, Jorisch and his father discovered the crates empty.

According to a statement from the Salzburg museum, Litzlberg on the Attersee was bought by a local art collector and was then in the possession of various Salzburg museums.

Jorisch began looking into the whereabouts of the collection about 15 years ago, when changes in the law in Europe and United States made recovery of art despoiled during the Nazi era more feasible.