Twelve (12) vintage Streamline bright green plastic buttons on three original cards. Size 24, 9/16" *(15mm) concave circle with straight sides and flat back. Very shiny. Two-hole, sew-through attached to the cards with staples. Washable. Made in Japan. The tops of the cards have been trimmed off but the buttons are in very good condition. *The card lists these as 5/8"; they measure slightly smaller at 9/16".