– A guitar that once belonged to Kurt Cobain, which is likely worth millions, is now in the hands of Eeries frontman Isaiah Silva, and Cobain's daughter is fighting to get it back in the family. Frances Bean Cobain was married to Silva for 21 months, and she's been trying to get the Martin D-18E (which had the bridge flipped so Cobain, a leftie, could play it comfortably) back ever since they split in March. Silva claims she gave it to him as a wedding gift and it's rightfully his. Now, the battle is headed to court, Page Six reports. "It’s not [Silva’s]. It’s a treasured heirloom of the family. It’s not his to take," Frances Cobain has said. But sources tell Page Six that Silva isn't giving in, and "is forcing the matter to litigation." The guitar, the one Cobain played during Nirvana's 1993 MTV Unplugged show and also thought to be the last one he played before taking his life, was once insured for $1 million but, per experts, is probably worth several times that now. Back in August, Silva requested $25,000 a month in spousal support and half of any money Frances made during the marriage, and said the couple had no prenup, TMZ reported. A judge has since ordered Frances Cobain to pay Silva $15,000 a month as part of an interim settlement.