… Envelopes, letter cards, plain postcards and correspondence cards, of paper or paperboard; … of paper or paperboard, containing an assortment of paper stationery. …
Explanatory notes
… of paper or paperboard, containing an assortment of paper stationery. 4817.10 ‑ Envelopes 4817.20 ‑ Letter cards, … unless they contain printed provision for the address or stamp or other indications of their use. Correspondence … 48.20. (c) Envelopes, postcards, letter cards, etc., stamped by printing or otherwise, with stamps of current …