Rare Vintage Coin Silver Squash Blossom Necklace: Old Pawn Sterling Silver, c1950s JN 671

Rare, possibly 1 of a kind coin squash blossom. What is unique is the naja. A complete circle with no opening and carved in the surface is a long snake aiming to bite its tail. Also unique is the whirling log carved in the bail. Handmade beads The "blossoms" are old Mercury dimes.
Good vintage patina.
Tested Sterling. Unmarked as are many of the oldies. Some letter scratched on the back, likely Trading Post code. C1950s
weighs 128 grams, beads measures 26", naja is 2 1/2"
Inventory #JN 671