That rock is this? It was present of a friend, and has the Romo-Carbo registration in the side. I do not know about what one is. They can help me? Sorry my poor english and the photos...
http://i1189.photobucket.com/albums/...a/8fed476c.jpg
http://i1189.photobucket.com/albums/...a/46e4c7d0.jpg
http://i1189.photobucket.com/albums/...a/b5202aa9.jpg
http://i1189.photobucket.com/albums/...a/2e4987ad.jpg