This is a super kitschy Christmas serving tray or platter. I think it is from the 40's or 50's based on the materials and construction. It is made from 2 layers of plastic with a very colourful piece of Christmas fabric sandwiched in between. The top layer looks like lucite and the bottom is an opaque vintage "plastic", likely catalin or something similar. The edge is softly scalloped.
It just screams vintage.
The condition is very good with no fading and some light scratches in the lucite from someone cutting on it.