20th Century Design Stamp Postcard Complete Set of 170 I am selling these as I am organizing my parents' house. This is a complete set of 170 postcards featuring the designs of the "20th Century Design Stamps" (Series 1-17) released by the post office from August 1999 to December 2000. (10 designs per series x 17 series) These are quite old, dating back approximately 25 years. They are mostly in good condition, but some may have minor scratches. Although they are new and unused, please understand that they have been stored by an individual for a long period of time.