This US FDC First Day of Issue Cover features a colorful design with an image of Albert Einstein and a cancellation from Princeton, NJ in 1966. The 8 cent denomination makes this cover a great addition to any stamp collection, especially for those interested in vintage ephemera. The cover is used and ungraded, and has not been certified. The cancellation type is First Day of Issue, adding to the historical significance of the item. Made in the United States, this cover is a unique piece of postal history that is sure to impress any collector.