This piece is signed "VBL" - with the right side of the letter V forming the left side of the letter B, followed by an L. Blake died in 1988 and Velma died in 2013. The Lesansee's work is sited in several books about Zuni jewelry making (Bassman, Theda - "Zuni Jewelry" West Chester, PA: Schiffer Publishing Co., 1992, p. 25. ).
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