sentences:  Others like to obtain them with special handstamps that have some connection to the stamp subject matter.Also, stamp collectors will usually put the stamp on the back of the card, but a very popular variation is for the stamp to be applied to the face of the card, so that the postcard picture, stamp and postmark are all visible on the same face.The first card was not put on sale until two months after the issue date of the stamps, so would not have been eligible for a First day of issue postmark.