Bleach tour during a haircut in 1989, well before Nirvana's
Nevermind breakthrough two years later, the auction house explains.
Osbourne stashed away a lock and later gifted it to Seattle artist, Nicole DePolo, after Kurt's death in 1994.
Along with the strands of dirty blond hair are photos of the haircut in progress and a handwritten note that reads: "29/10/89: Tess cut Kurt's hair in Birmingham, England, 27 Holy Rd., Handsworth, Birmingham B202BU."
DePolo writes in an affidavit that Osbourne must have "had a sense that Kurt would become a musical force." She further credited the hairdresser with giving the frontman his first "blond pageboy" hairdo "just before his image began to circulate throughout the world."