Having the Back of the Book catalog number of C6. This consists of a vertical pair of stamps (two stamps). It has the Original Gum and has never been hinged. It is encapsulated by PSE (Professional Stamp Experts). The colors of the stamp is Carmine.
United States Airmail Vertical Pair Scott Catalog C6 Encapsulated by PSE
Having the Back of the Book catalog number of C6. This consists of a vertical pair of stamps (two stamps). It has the Original Gum and has never been hinged. It is encapsulated by PSE (Professional Stamp Experts). The colors of the stamp is Carmine.
