Never drive faster than your guardian angel can fly is the theme of this Guardian Angel Visor Protector. The guardian angel is composed of pewter and features a Silver Mercury Dime set between wings. The Mercury Dime is composed of 90 percent silver and was designed by Adolph Weinman. The Silver Mercury Dime was minted from 1916 to 1945, years and mint marks will vary. The visor clip is composed of stainless steel. The Guardian Angel Visor Protector comes in a white box and includes a Certificate of Authenticity.