I have a zuni bolo tie, I believe it is a thunderbird, with turquoise,red coral, yellow mussel shell, mother of pearl shell, and black jet, I think it was made around 1970, the hallmark on back is, stamped sterling with BL and that's all . Sure could use some help. I think it could be bill and lucinda laweka or blake and velma lesansee or bernard laiwakete or joyce and frank francisco.