This a rare and very large art nouveau era button--its twin appears in the Big Book of Buttons--measuring 1 & 3/4 inches. It is in very good condition with an edge defect. (It feels smooth to the touch though. It looks like an under-fill, not a chip.) It is signed G STALIN and marked sterling. It is very pale pink with the lightest iridescence. I scanned lots of images, turning it 360 degrees as the scanner light comes from one direction (like a Xerox machine).