Feel free to compare with this IP Cobain autograph. I am an IP autograph collector in Chicago. I have been collecting in person for over 40 years.
I was fortunate to have gotten Nirvana in Chicago October 1993 during the In Utero tour. They were playing the Aragon Ballroom and were staying at the Double Tree Suites east Michigan Avenue just North of Water Tower. Band signed post show. Surprisingly, I was the only one waiting at the hotel! I'm still kicking myself for not having brought at least a second item with me that night!