Auctioneer Malcolm Willits put another Oscar statuette on the block yesterday , looking to sell the figure that was awarded to Robbie Robertson for his special effects work on the 1969 film “Marooned.”The statuette ended up in Willits’ possession after Robertson reportedly gave it to the owner of the Hollywood Knickerbocker Hotel several years ago, in exchange for back rent. That family eventually sold it to Willits. While the Academy of Motion Picture Arts & Sciences has continually tried to stop the sales of Oscars, several statuettes have found their way to auctioneers’ blocks of late. Last summer, Harold Russell, the former Army instructor who won the supporting actor award in 1947 for “The Best Years of Our Lives,” auctioned his Oscar off for $ 60,500. The money was used to pay for an eye operation for his wife. Willits, who has auctioned off about a half dozen Oscars, is asking $ 25,000 for Robertson’s Oscar.