It's so rare, it's amazing.
I saw this, and thought to myself: "WOW! I bet there are only like... 7 of these in the whole world!".
When the cool noisy drums came in, I realized that there is probably only 3 or 4. I bet some rich asshole has horded them all to himself, in some private collection somewhere.
If you happen upon any more, let me know. K, thnx.