Artist Statement: Adjustable silver tone ring in dark green. MARGIN RELEASE from a vintage Smith Corona typewriter. The key is celluloid material and appx 1/2" or 15mm in size. Securely mounted on a cute silver plated adjustable form. The ring is currently a little over a size 7 but can be adjusted up or down.Seller has many more available designs from typewriter keys of the 20th Century available on her store.