The is an Early US Stamps Set of 4 - #511, #514, #518 used and #543 mh. See pictures for best description. All questions gladly answered ahead of time to avoid confusion later. Early US stamps can be notoriously difficult to identify. These are the stamps that you will receive. I have been collecting for 60+ years and a member of APS for over 20 years and have done the best I can with the books and resources that I have collected over the years. I have made every attempt to identify these stamps correctly. Returns are always accepted from customers, as long as they are returned in the same condition as shipped. If you have information that you can explain to me changing the Scott number of these stamps, I am always willing to listen. Again the pictures have not been altered or sharpened in any way and I have identified them to the best of my ability. These stamps have been in a smoke free/ climate controlled home since being bought. Thanks for looking.