Need help identifying a fork

Apr 28, 2009
Fort Worth, Tx
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bought a niner today. My first mountain bike in 15+ years. It came with this green rockshox on it. His friend built this bike and he bought it because his friend needed cash and he was trying to help him out.
The guy I bought it from replaced the original stickers with old school stickers. So now I have no idea how to identify it to sell.
Any help would be appreciated.