New vintage black lucite bangle Made in Austria

New vintage black lucite bangle Made in Austria bangles bracelet These are NWOT but have so many scratches and marks on the gold edges. Sorry I didn’t store this properly. It’s very lightweight. I think it’s a type of plastic or resin (lucite? Acrylic?) that was popular then (especially chic from Europe). The “inlay” is solid black opaque. Outer and inner rim may be gold tone foil paint-coating? Original manufacturer tag: made in Austria. Vintage. C 1970s.