I think this tube was mentioned once before on the list, and I wanted to share the one I got for $7. (I still wonder how I got it for that little.) The tube seems to be in perfect condition except for a small ding on the top left, and a little metal disc rolling around in the fill nipple. I tested it, and it seems to work fine. I plan to make it into a FLW. I have no idea whether it is NOS, or used, but it came in the original packaging that the tube that sold on ebay was in.

front of tube ^

the small copper-colored disc is the thing that rolls around. ^