This Mosser "Cherry Thumbprint" Vaseline glass covered cupcake dish glows particularly yellow under UV light - the only way to display a collection of Vaseline glass. This bright yellow indicates a higher infusion of uranium. Don't worry - the flour in your cupcake likely has more radiation than this special service item. It measures 6 1/2 in x 7 5/8 inches and weighs a hefty 2 lb 14.75 oz. American, c. 1930.