Miller High Life Beer rare Panic Button Flip Up Pinback

1962. 1 1/2" x 2 1/4' rectangular Red plastic pinback with button activated panic flag that flies up when button is pressed. Front of pinback has large "Panic Button" lettering in White. Flag has Red image of Miller High Life Beer logo with "Make Mine" lettering above it. Button is in overall very good condition with normal scratches on surface and one streak of down left side that is mostly visible only when held at an angle to light. We have taken the picture to highlight these marks but appearance when worn is unaffected and excellent. Patent number on back Silver plate. Works.