Vintage 1980’s Hammered Cuff Necklace

Super cool gold tone metal neck cuff. This may actually be older than the 80’s because of the 1960’s style clasp. Either way this is a very stylish piece. The metal is hammered with a twist in the center. The piece is unsigned and I can’t find another example online. The condition is excellent with no signs of wear. Measuring for size is tricky so may not be exact. Bottom edge opening is 6”, top edge opening is 4”. Chain is 5”. My neck is 14” and is this piece fits perfectly.