Another post of philatelic covers in our collection.

This cover is interesting to me for several reasons, for one it is the show cover for the Indypex stamp show. Indypex is an annual stamp show held in Indianapolis each October. Indypex is an accredited World Series of Philately show. This cover commemorates the first known use of postage stamps in America and it was on a letter to Indianapolis! This show cover also is franked with the 18 cent "Sea to Shining Sea" stamp. This is a coil stamp having been produced to be used in stamp vending machines. My collecting in this area is to collect the stamps from these coils that have a number printed at the bottom indicating what plate was used for printing, these stamps are called Plate Number Coils. So, a cover from Indypex, franked with a PNC and a cachet showing the first known use of stamps in America.