Over 55 Vintage USPS Post Cards with paid postage

Vintage USPS Post Cards with paid postage from the 80's and 90's cards are blank on both sides besides the postage Brandeis University America the Beautiful USA 15 cents postage to 20 cents everything sold as is. what you see is exactly what you will receive this is a lot of over 55 postcards with postage from 1988, 1991 and 1997