… of paper or paperboard; boxes, pouches, wallets and writing compendiums, of paper or paperboard, containing an …
Explanatory notes
… of paper or paperboard; boxes, pouches, wallets and writing compendiums, of paper or paperboard, containing an … 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 …