Scott Catalog # : 4353 - 4357 / FDCO Exclusive First Day Covers.
Set Includes: 4353 - 1959 Cadillac Eldorado / 4354 - 1957 Studebaker Golden Hawk / 4355 - 1957 Pontiac Safari / 4356 - 1957 Lincoln Premiere and 4357 - 1957 Chrysler 300C.
The Collectible First-Day Digital Color Postmark is an official digital postmark bearing the first-day-of-issuance-date containing an image that relates to the stamp design with the words "FIRST DAY OF ISSUE."
The cachet (image) was made on a computer and printed on high-quality envelope.
