Welcome to Geekhack!
That's a nice looking case. One member here has a black case very similar to that one, can't remember who at the moment.
Hopefully they will be able to enlighten you.
If you're from china I thought you could buy these from tao bao?
Ah okay sorry I do not know where to find the silver one then. Goodluck!
Welcome to GH.
Wasn't there a silver Filco case like that from some US-based ebay seller?
Show Image(http://dl.dropbox.com/u/61075086/WelcomeWally.jpg)
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that case looks so cool