Every couple of days, I run a "Tony Campana" search because I'm looking for the rest of the printing plates. But there's been nothing since I picked up the black one a few weeks ago right after Series 2 was released. However, I did come across a 1/1 Blank Back being offered by the Topps Vault. I've purchased these before and kind of have mixed feelings about them.
On one hand, they are limited edition 1/1s. On the other, they are manufactured for the sheer purpose of making money. They aren't part of the process of making a card like a proof or printing plate. I'm always happy to win an auction but when I got it, there was a twinge of buyer's remorse.
They come in a very sturdy lucite case, sealed with a Topps sticker at the top. The back is indeed blank, with a holographic sticker with a serial number on it. Also included in the package was a Certificate of Authenticity. Nothing fancy, standard form with the number from the sticker on the card handwritten on the certificate.
