Julien's Auctions on Instagram: "Tony Hawk’s iconic Birdhouse “Falcon 2” “900” skateboard. You’ve witnessed the legendary 1999 X Games moment, now get ready to own a piece of skateboarding history! Estimated to fetch between $500,000 and $700,000, the “Tony Hawk: The 900 Collection” landmark auction also features the helmet, sneakers, and knee pads Hawk used to land the first-ever “900” at the 1999 X Games, PLUS nearly 100 other artifacts from Tony Hawk’s personal collection and legendary career