Don't have my
Thor bluray on hand so no high-res photos from me. I found these though, not sure if they'll be of any help....
The first pic is from
The Avengers, probably from the official website; the second pic is a photo of the briefcase accessory that comes with the
Hot Toys figure of
Nick Fury, and the final pic is a really lo-res screen-cap from the epilogue of
Thor. Otherwise I've no idea on the make or brand of the briefcase used....