Sterling Silver & Shell Braided Cuff Vintage

Chunky, weighty braided handmade sterling cuff with some sort of shell nugget anchored in the center (fam rumor is spiny oyster but IDK). This is originally from the 70's and has been lovingly worn & stored. Not flexible without help from a silversmith- sturdy AF! Unsigned. Measurement Notes 1.25" wrist opening, easy for my standard size wrist to slip on 2.5" at widest part of cuff