One set of stamps with 55c of face value,enough to send one standard piece of mail - stamps date back to the 1930's - contains 4-6 stamps This set includes enough postage to mail one letter that is standard size up to 1oz. Please check USPS for current rates and standard letter sizes. how do i adhere the stamps? Lick to adhere or use a permanent glue stick. how should i arrange the stamps? We like to tile them in the top right corner,but layout is up to you! Get creative!