Vintage authentic incolay goddess plate with date

very rare find with the carved date. I've seen one other with the date. most do not in this series. 1975 genuine Incolay stone display plate, a hand-inlaid art piece featuring the image of a Greek or Roman goddess. Measuring approximately 4.25 inches in diameter, this blue plate is a marvel of craftsmanship, showcasing the delicate and intricate work Incolay is known for. Incolay stone is a specially crafted mixture of quartz-based minerals, known for its unique ability to capture fine detail and its exquisite color variations. The goddess figure, a symbol of grace and beauty, is etched into the front, with the year 1975 carved subtly at the base, marking its creation during a renaissance of classical inspirations in art. Great condition . Incolay stone is a complex combination of minerals including those composing Onyx, Malachite, Carmelian, Jade, etc. Selected mineral are crushed and ground into particle sizes forming an aggregate