After Marilyn Monroe died in 1962, Andy Warhol created the silk screen “Double Marilyn.” The picture, a gift to his older brother, Paul Warhola, will be auctioned Thursday in New York. The artwork is estimated to sell for $3 million to $4 million, according to the Phillips auction house website, www.phillips.com. Seven of the artist’s nieces and nephews, who range in age from 58 to 75, will share the proceeds. They are the children of Paul Warhola, who died in 2014, and his wife, Anne, who died in 2016. Until last fall, “Double Marilyn” and 10 early Warhol artworks owned by the Warhola family hung at The Andy Warhol Museum on the North Side. James Warhola, who lives in Long Island City in the New York borough of Queens, took them back after he was unable to arrange a sale or trade with museum director Patrick Moore. “My dad was the oldest brother,” said James Warhola, a 63-year-old artist. “He saved the early works when my uncle left for New York. They have been in the family ever since as well as the ‘Double Marilyn’ silkscreen. That was part of our household for close to 60 years.” He is co-executor of his parents’ estate with his sister, Mary Lou Simpson of West Mifflin. Mr. Warhola said they had to settle the estate by February 2018 and that the paintings and property totaled several million dollars. That’s well under the new $22 million federal estate tax cap, which means the heirs wouldn’t pay federal taxes on the artwork. But they still must pay Pennsylvania’s 4.5 percent inheritance tax. Selling the art was the best solution, Mr. Warhola said. “That’s why we had to collect the paintings from the museum. We would have loved to have kept everything intact and kept it at the museum. “It’s hard to divvy up the paintings equally. For one thing, the values can vary,” Mr. Warhola said. Andy Warhol's "Living Room,'' painted when he was a student at Carnegie Tech, shows his boyhood home in South Oakland. The painting is part of the Warhola family collection. Neither Mr. Moore nor Demetrios “Jimmy” Patrinos, president of The Andy Warhol Museum board, would comment. “We would love to have these if we could,” said James Spencer, a Shadyside business executive and Warhol museum board member. “We don’t have the cash to purchase them.” Mr. Spencer added that the museum, which opened in 1994, has a small endowment and no money to buy art. Mr. Moore and Mr. Warhola met early last year in person and discussions continued through email messages for several months. It was difficult to value Warhol’s 10 early works made in 1947, 1948 and 1949, the years he attended Carnegie Tech, now Carnegie Mellon University, Mr. Warhola said. So the museum asked the art auction house, Christie’s, to appraise the Warhola family collection. Christie’s valued the 10 early artworks at $1.6 million in June 2017. The family maintains that the appraisal, which did not include “Double Marilyn,” was too low. When Mr. Warhola and Mr. Moore could not agree on the value, they tried to negotiate a trade but those efforts failed. In 2016, the museum traded away five Warhol works to Larry Gagosian, an internationally known art dealer. In exchange, the museum obtained “Do It Yourself (Sailboats),” a 1962 Warhol work that is important because it shows the artist appropriating other forms of media in his work and commenting on them. One of the early pictures in the Warhola family collection, “Living Room,” shows the family home on Dawson Street in Oakland. In November, that picture will go on view at the Whitney Museum of American Art, the first American museum to organize a comprehensive retrospective of the artist’s work since his death in 1987. After its run at the Whitney, “Andy Warhol: From A to B and Back Again” will travel to San Francisco and Chicago. Right now, the 10 early artworks are under option to a German collector, Mr. Warhola said, adding that the option agreement expires in two weeks. He said The Andy Warhol Museum “would have loved for us to have donated the collection” but that was not possible. “My uncle’s estate went to a foundation. We didn’t get anything from the foundation. We’re not the Rockefellers. It was my dad’s main asset,” Mr. Warhola said. Donating the artwork to the museum could have resulted in a tax writeoff if the family had other assets, he said. But the art was their only asset. “If you don't have any other assets, you are just giving it away." Andy Warhol's niece, Mary Lou Simpson, and nephew, James Warhola, with a painting Andy Warhol made when he was a student at Carnegie Tech. The painting shows Mrs. Simpson with siblings Paul and Eve. Pre-sale estimates are not always indicators of a painting’s actual auction price. Warhol’s works often sell for more than the pre-sale estimate. A 1962 “White Marilyn” silkscreen by Warhol was estimated to sell for $12 million to $18 million in 2014. It fetched slightly more than $41 million at a Christie's auction on May 13, 2014. In this case, Phillips auction house has a third-party guarantee on “Double Marilyn.” This means that one bidder has guaranteed a price of $3 million for the painting if no one bids higher. Mr. Warhola said he is showing the collection of 10 early Warhols to dealers and museums. “There are many small museums in Europe that recognize the influence of these early works. My uncle was very much influenced by the European expressionists, people like Paul Klee,” he said. He noted that the Baltimore Museum of Art is selling some of its Warhols to purchase work by artists of color so it can fill in gaps in its collection. The Warhol Museum could have used the same approach, Mr. Warhola said. He said the Warhol museum did “express interest” in “Nosepicker 1,” “Nosepicker 2” and “Living Room.” “They didn’t really think the paintings were important to keep. That was my impression.”