Not much to comment about this limited edition plaque. The question of use does arise about this object. What does someone do with a commemorative plaque such as this? Is there a religious element to this? Does someone have this plaque as a part of their tribute or shrine to September 11th? As I recall when I purchased this object, the plaque was maufactured from WTC steel. How do you verify such a claim? A certificate of authenticity could be there way of providing proof, but it isn't clear to me that this is there reason (or claim) for the certificate.