Vintage amber lucite bead mesh bib necklace

My obsession with vintage/unusual necklaces knows no bounds, and I need to make more room! This particular necklace is a true beauty. Not sure its origins; was purchased at a huge flea market and the proprietor also didn't know. I estimate it to mid-century. Bib is chainmail mesh w individual lucite beads attached to each piece of mesh. Beads are intact. Has lovely movement and lays beautifully at the neckline. I believe the chain is brass; it has never left marks. Light! Adjustable 6.5" - 7.5"