Hi Steve,
There are none available. I spoke with Tommy "The Chryco" at The Nats in Ohio about these a few weeks ago. He bought some of the molds from Gene Gregory. He does not have the 71 brow mold but knows the person who purchased them and they are in Victoria BC. They are far away from him but he did say he was planning on contacting him as the guy who owns only purchased them so they would not be lost but has no interest in making the 71 brow molding.
Hope all is well with you and yours.
Brett
His link for contact info.
http://www.tommythechryco.ca/