Good question. I'm glad you asked. Previously I had assumed it was the standard Copper/Nickel collectible release, but after doing some more reading I realize that it could be the less common Silver version. From the reading I've done, I haven't yet found a way to distinguish between the two. Maybe some other listians could help clarify...
I know. After the last fellow commented, I went to weigh it, but couldn't find my scale. Hopefully I find it soon. I'm super curious what it will weigh.