FLIGHT CACHET AIR MAIL FIRST DAY COVER WITH PLATE BLOCK FOR SALE: Click on the image text to return to where you were on the Space and Flight Collectibles Page.
 

#C88 Mt. Rushmore Airmail First Day Cover #C88 Mt. Rushmore Airmail Plate Block
#C88 Mt. Rushmore Airmail First Day Cover and Plate Block - Both for $4.50