An art museum in the US is selling a painting by Lucas Cranach the Elder, a German Renaissance painter, that its Jewish owner was forced to part with as a result of Nazi persecution in World War II. The proceeds will be divided by the museum and the heirs of the former owner, Henry Bromberg, the Allentown Art Museum in the US state of Pennsylvania said on Monday. Allentown Art Museum president and chief executive, Max Weintraub, said the painting, “Portrait of George the Bearded, Duke of Saxony,” was purchased by the museum from a New York gallery in 1961. “This work of art entered the market …