Vintage Modernist Necklace Gold Tone Retro Geometric 60s Collar Bib Runway Piece

Vintage Modernist Necklace Gold Tone Retro Geometric 50s 60s Collar Bib Runway Estate Piece Fair to good vintage condition with some general wear, fading to the gold tone plating. The clasp at the back is not centered, it’s not noticeable when being worn. Please take a look at all the photos and use them as part of the description. Measurements shown in photos. This piece is not signed, but it really looks and feels like a designer piece.