This is a (near as I can tell) extremely rare pelican-type case that was provided to press in 2004. The shell is metal, maybe aluminum? And there’s an NVIDIA logo printed on it. It’s got packing…

FS: NVIDIA briefcase (press promo item) from GeForce 6 series launch, with 6800 AGP video card

Source: [H]ardOCP – FS: NVIDIA briefcase (press promo item) from GeForce 6 series launch, with 6800 AGP video card