[ATP]

Joey, be extremely careful. This example is a known replica (reproduction) that popped up a few years ago and was in several different places. There is one original, obviously, but many fake ones produced that look just like the exact example, staining and all. It's made to be on the back of a civil engineers card if I remember correctly. Will try to post an example when I have time later but may not be able get to it if someone else can jump in and do a google search for it. Seriously, don't buy it without looking into this.