“Someone told us that guitar was haunted – people who had it had accidents. I’m a Nirvana fan, but it was just a regular guitar to me”: Opeth's Mikael Åkerfeldt said the Martin museum felt like the “Holy Land,” but one guitar he played there left him cold

(left) Mikael Åkerfeldt plays Kurt Cobain's 1953 Martin D-18, (right) the D-18 in question pictured in full.

Guitars used by Kurt Cobain have been deemed by the vintage guitar market to be quite the commodity.

The two most expensive guitars ever sold at auction both belonged to the late Nirvana frontman – the Mustang he used in the Smells Like Teen Spirit video sold for $4.55 million in 2022, and the Martin D-18E he used for Nirvana's legendary MTV Unplugged performance sold for $6 million in 2020.