I looked through one of the hallmark books for EN. Came across a name Ervin Nakai and did a google search. https://www.ebay.com/itm/Navajo-Old-Pawn-Sterling-Silver-Kachina-Mask-Eagle-BOLO-TIE-Native-Made-in-USA-/292764505263?oid=382560716420 Not sure what I think. The listing doesn’t give a name but the styles are similar. It was a dead end here.