Vtg Heavy Plastic Marble Green Smooth Corners Photo Frame MCM 8.75x6.75x0.75"

Vintage MCM Statement Green Swirl resembling green marble like photo frame. Could be Lucite, Acrylic? Heavier plastic than usual. Rounded edge smooth design with velvety back cover. Over 1.5lb. Pre-owned in good used condition. There's wear but the material is dense and sturdy. The backing could use more lint cleaning. It had lint and some fur. Had gently cleaned off most of them. Please review photos for additional details. As is.