Bracelet with PJB mark

Hi! I’m hoping for help identifying the source of a bracelet my sister acquired as a child. She got it ~30 years ago from an older lady selling off her collection.
We’ve been curious for years if it’s even real, and I just found this group!

It is a beautiful bracelet. I couldn’t find anything on the hallmark. However the bracelet appears to be Navajo handmade. It is a combination of turquoise and Mediterranean Coral. A very nice piece that should be worn.