Explanatory notes
… to correspondence or postal packages; “postage due” stamps, etc. (B) Revenue stamps of all kinds , i.e., receipt … permit stamps, consular stamps, stamped revenue bands, etc. (C) Stamp‑postmarks , i.e., letters bearing a … (stamped paper) , i.e., franked envelopes, letter‑cards, postcards, newspaper wrappers, etc. The articles of this …