Don't ever be unwilling to add to the thread fellas. It's all about learning. I knew someone would recognize the Greenbone and it doesn't surprise me that it was Charlie! It is a XX as well. The thing about Greenbone is that most of them are dark. Brown actually. I have seem some Case Tested Toenails that were a lighter, almost pale, green/brown in color. I have been told by many collectors that it is easier to get a "Tested" Greenbone Toenail than it is a XX. I think that would be splittin' hairs tho.
Greg
Just wanted to add that if it wasn't for Coops threads, I never would have been able to dial in my Point & Shoot camera and use Photoshop effectively for knife photos. Again, it's all about learning and wanting to know.