1940s Signed Thunderbird Necklace Blue Turquoise Native Sterling Old Pawn JN 780

Well made Thunderbird signed on the back with a good blue turquoise cabochon and old handmade silver chain.
Great vintage patina.
Tested Sterling the back is signed Tucdon Arizona C1940s
weighs 18 grams, chsin measures 18", pendent is 2 1/4"
Inventory #JN 776