I’m stuck on either this is a Vintage Avocado Green Whitehall Colony Cubist Plate or a Vintage Indiana Glass King Crown Green Plate. Cube design gives it a textured and geometric appearance. Believe it’s the “Whitehall” pattern from the “colony” product line, commonly associated with Indiana Glass. Typically produced in the 1960s and 1970s. Mid-Century Modern. Raised foot at the bottom of the dish shows some wear could be very small chips from being a vintage piece and setting down on different surfaces. Some surface scratches.(Refer to photos). This piece did not glow under UV light. Being a vintage piece keep in mind that there are signs of wear such as surface scratches, minor imperfections like small bubbles or straw marks from manufacturing.