(a) Matters on which Board member or employee worked. No former member or employee of the Board shall appear personally before the Board or a Federal Reserve Bank on behalf of anyone other than the United States, an agency thereof, or a Federal Reserve Bank, in connection with any judicial or other proceedings, application, request for ruling or determination, or other particular matter involving a specific party or parties in which the United States, an agency thereof, or a Federal Reserve Bank is also a party or has a direct and substantial interest and in which he participated personally and substantially as a member or employee of the Board through approval, disapproval, decision, recommendation, advice, investigation or otherwise.

(b) Matters within Board member or employee's official responsibility. No former member or employee of the Board shall appear personally before the Board or a Federal Reserve Bank on behalf of anyone other than the United States, an agency thereof, or a Federal Reserve Bank, in connection with any judicial or other proceeding, application, request for ruling or determination, or other particular matter involving a specific party or parties in which the United States, an agency thereof, or a Federal Reserve Bank is also a party or has a direct and substantial interest, and which matter was in process during his tenure of office or period of employment and under his official Board responsibility, at any time within a period of one year after the termination of such responsibility.

(c) Consultation as to propriety of appearance before the Board. Any former member or employee of the Board who wishes to personally appear before the Board or a Federal Reserve Bank on behalf of any party other than the United States or an agency thereof or a Federal Reserve Bank at any time within two years from termination of employment with the Board is advised to consult the General Counsel or the Secretary of the Board as to the propriety of such appearance.

(d) Rulemaking proceedings. Nothing in this section shall preclude a former member or employee of the Board from representing another person in any Board or Federal Reserve Bank proceeding governed by a rule, regulation, standard, or policy of the Board solely by reason of the fact that such former member or employee participated in or had official responsibility in the formation or adoption of such rule, regulation, standard, or policy.

(e) Effective date. This part shall become effective November 6, 1973. Notwithstanding the foregoing, the limitations of this part shall not apply to any activities with respect to a specific matter before the Board in which any former Board member or employee may be engaged on September 21, 1973, the date of publication of this part, until the expiration of 60 days following the effective date of this part or of such additional period as the Secretary of the Board may determine to be appropriate in order to avoid inequity.