Bernice Bonnie Feather Pin

Just wondering about this one. It is marked Sterling and NAVAJO along with what seems to be Bernice Bonnie’s hallmark. I haven’t found out much about her. I am looking for an approx. age and value. Really more interested in the age as I got it for a song and will be passing the deal on to the next owner. It is a safety catch pin. Any thoughts would be appreciated!

I believe Bernice is still living, probably late 70s. However, I don’t believe she makes jewelry anymore. I would guess this piece was made in the 1990s, $40 - $50.