(e) Exception Notwithstanding subsections (b) and (c), the Board of Governors of the Federal Reserve System shall produce such Federal reserve notes of $1 denomination as the Board of Governors determines from time to time are appropriate solely to meet the needs of numismatic collectors of that denomination. Such collectible versions of $1 Federal reserve notes shall be sold in accordance with other general provisions governing collectible versions of notes. (f) No effect on legal tender Notwithstanding any other provision of this section, $1 Federal reserve notes are legal tender in the United States for all debts, public and private, public charges, taxes, and duties, regardless of the date of printing or issue.