music Kurt Cobain's "Smells Like Teen Spirit" guitar and this weird caricature of Michael Jackson he drew are up for sale David Pescovitz

auctions Napoléon's good luck charm could fetch $250 million or more at auction Mark Frauenfelder

books This tiny 5 millimeter book just sold for $4,000 David Pescovitz

auctions The iMac used to create Wikipedia is up for auction David Pescovitz

auctions An Apple-1 computer hand-built by Jobs and Wozniak sells for $400,000 Carla Sinclair

television The Fonz's leather jacket is up for auction David Pescovitz

auctions This vintage rock shirt just sold for a record-breaking $17,000 David Pescovitz

cars Own the Doof Wagon! Max Max: Fury Road vehicles up for auction Rob Beschizza

dinosaurs Triceratops skeleton up for auction, starting price $1.2m Euros Rob Beschizza

auctions Forty-year-old slice of Charles and Diana's wedding cake sells for $2500 David Pescovitz

movies The Porsche 928 from Risky Business is up for auction David Pescovitz

Games Sealed copy of Super Mario 64 breaks videogame auction record at $1.5 million, Luigi very proud David Pescovitz

art This small Leonardo da Vinci sketch of a bear expected to sell for $16 million David Pescovitz

Comics New record for the most expensive comic book ever sold David Pescovitz

Comic Books Batman No. 1 sells for $2.22 million Mark Frauenfelder

cars Auction of entire museum of muscle cars David Pescovitz

tv David Hasselhoff is auctioning off KITT from Knight Rider David Pescovitz

auctions Rare Pokémon card expected to fetch $350k at auction Mark Frauenfelder

Comic Books Giant online auction of pre-code and underground comics Mark Frauenfelder

animals This pigeon just sold for $1.9 million David Pescovitz