$600,000 for a guitar that doesn’t even work? It makes sense once you know the reason why.

Over the weekend, a broken Fender Stratocaster once smashed by Kurt Cobain was sold for $595,900.

The splintered axe was also signed by Cobain and Nirvana bandmates Dave Grohl and Kris Novoselic.

The final price tag was nearly ten times the expected price of $60,000.