Letter Cards, Plain Postcards, and Correspondence Cards of Paper or Paperboard

Plain postcards and correspondence cards under heading 481720 are characterized by their unprinted or minimally decorated nature — they are blank writing surfaces intended for personal correspondence. Printed greeting cards with pictorial or decorative content are classified under heading 4909, which covers printed postcards and greeting cards. The degree of pre-printing and the commercial purpose of the card are the key distinguishing factors.

A combination sheet/envelope is a single sheet of writing paper that folds and seals to form its own envelope, eliminating the need for a separate envelope. Under the US HTS, this format is specifically captured at 4817202000, distinct from plain postcards and correspondence cards at 4817204000. Importers should confirm the product's construction on the commercial invoice to ensure the correct line is declared.