Kenneth Starbird pottery

This is pottery by Kenneth Starbird who worked in California. He passed away on July 6th 2014. Through email, I contacted his wife who met him in 2002. She verified that it looked like his signature and work from the 1060's. She also sent me pictures of work that was very similar to it from the 60's. He had a long career in art and has works in the Pasadena art mueseum. I am looking to sell this, but have no experience in doing so.

Excellent