These twenty-four buttons appear to be either injected plastic or light aluminum. There is no lot or model numbers listed on the buttons. The fronts state "RL Lauren”, and has 2 stars. The back has a single loop for attaching the button. They are just a bit larger than a dime. Wish the photos were better, but the camera refuses to get any closer without getting even more blurry. Please email with any questions. International buyers, please contact me before purchase.