I looked at the photos for the standalone auction, and it's actually very interesting.
The "silver" deck is actually a silvery color, possibly gray or possibly metallic silver, I can't see which. But if you look at the red cards, they have the colors of the standard USPC faces and not the custom colors of the T11 model.
In short, it's the same deck as the first USPC model with the better T11 box and silver replaces copper and bronze.
Bah. USPC is tearing a page out of the T11 playbook and releasing a slight variation in a better box as a new edition. Granted, there's the silver recolorization, but that still could be simply shades of gray on the card backs and not metallic ink at all. Same bright reds, same USPC color scheme on the fronts.