Zuni thunderbird cuff with maker's Mark question

Hi there,
I came across this cuff bracelet and fell in love with it. It has a mark on the back, maybe a P F xxx? Out is very hard to read. Can you tell me anything about it?
Thank you for your time!

Hello, thanks for sharing. This is a Zuni Thunderbird design. The bracelet definitely looks like it has some age. It is interesting that the piece appears to have an artist name on the back, with that information I would call this a 1960s - 70s piece. The etching with the x’s is a traders mark that is the cost of the bracelet. Can you make out anything of the writing above the traders mark?