Steve, since this thread was last April I had to refresh my memory and remember I had also posed the question to the email list.
I got a return from Mike Drew who gave me the following link. I believe they are reproductions and overly expensive, but I think they are the correct trim ring for the Pantera. Very likely such a piece was universal when multiple Italian cars were sporting the 7 inch diameter headlight
http://reoriginals.com/headlig...ellostamp-l0056.aspx
another owner sent me this photograph that has the same stampings as shown in the linked trim ring
I suspect a diligent search on eBay Italy would turn up alternate sources for these rings as it appears they are being reproduced
Larry