What is the value of a little pottery signed by Patt Yazzie?

Hi

I'm sorry I don't have an answer to your Q. But I just wanted to let you know I have a

peice of Patt Yazzie, It is a scene of natives on horse back there is 6 natives some on horse back some walking, it looks like they are moving a love one lost ...maybe they are going to buring them....it is painted on a peice of flat rock. If you find out anything about this artist please let me know and I will do the same for you.

kathyinbljeans@hotmail.com