This First Day Cover features an exciting Albert Einstein cachet and comes with an insert. The 6 cent stamp was issued in the United States in 1966 and is a great addition to any science-themed collection. The cover has been previously owned and is ungraded, but it is a unique piece with a First Day of Issue cancellation type. The certification is uncertified and the item has not been modified. Add this special FDC to your collection today!