The Scott Catalogue of postage stamps, published by Scott Publishing Co, is updated annually with hundreds of thousands of changes and lists all the stamps of the entire world . From its humble beginning as a 24-page bound pamphlet, the multi-volume set now list more than 700,000 stamps from 600 different postal entities. Because of the size of each Volume, the 2021 edition has each volume split into a part A and B. So when purchasing you are obtaining...