Today I received a 2005 Charlie Higson "SilverFin" proof copy in the post. It was also enclosed in it's original silver foil bag which I didn't even know existed until I saw the book for sale on the web. There are still a few Higson paperbacks missing from the PizGloria.com website, and many of them are proof copies, so I'll be keeping an eye out for them on other book sale websites.
I'll try and scan the cover and add it to the website ASAP. This is the second Higson book I have in silver foil, the other being a first (paperback) edition of "Double Of Die". If anyone knows of any other please feel free to let me know.