This stamp Artist Trading Card Seal, by Catslife Press, is UNMOUNTED and measures 2 inches in diameter. This is the large seal. Stamp this seal on the back of your ATCs letting the recipient know it is a limited edition card, what # the ATCs is, and of course, your signature. Mount with Tack N Peel and use on acrylic blocks, or mount them yourself onto a piece of wood. It reads, "This small masterpiece is a one-of-a-kind piece of art and is a unique expression of the artist's inner life."