UPDATE:

28 Dec 2015: There are now 12 Node Brass (series 2.0) remaining for sale, out of a mintage of approximately 275. This is a revision downward from an original mintage of approximately 950; good news for those of you who already own a Node Brass. The revision can be accounted for as follows: 216 used for Node Brass "A" (series 2.0.2); 462 with severe carbon spotting scheduled for destruction. These numbers are not final and are subject to slight revision.