(b) How to order printed stamped envelopes. Prepare form 3203, Order for Printed Stamped Envelopes, as illustrated below. Submit the order through the post office named in the return address. However, if undeliverable letters are to be returned to the main office of a firm in another city, envelopes may be ordered at the post office where they will be mailed.

(c) Return address requirements. (1) The printed return address must include:

(i) Local address (only one of the following-whichever one is necessary to

ensure safe return of undeliverable letters; rural route number and box number; street address; post office box; name of building and room number including street address; or names of intersecting streets specifying which corner). The ZIP Code number must be shown in all instances. The adequacy of the address, to ensure return of undeliverable mail will be determined by the postmaster.

(ii) Name of post office or branch post office, State, and ZIP Code number.

(2) Printing of any of the following may be requested:

(i) A request to return after a specified number of days (not less than 3 and not more than 30). If a return request is included on envelopes for third-class mail the words Return Requested must be used. See § 48.2(d) of this chapter.

(ii) Name. The name may be that of an individual, firm, corporation, institution, association, or society. It may include the name and title of an officer of the concern (as John Doe, Treasurer, Washington Educational Association) and such titles as M.D., D.D.S., Rev., and LL.D., when they are clearly for identification and not for advertising.

(iii) Where a name as part of the return address indicates or incidentally discloses the nature of a business or vocation, it may be printed if the name is a bona fide business name that is used in a corporate charter, copartnership agreement, or other articles of organization, or is the name under which business with the public is actually transacted.

(iv) The name of a branch or department of a business may be printed only when other branches or departments are located at the same post office address, to ensure the return of undeliverable mail.

(3) No other matter may be printed, nor are such forms as phone numbers, Mr., or Esq., permissible. Names like druggist, attorney at law, and C.P.A. represent business or professional names and are not classed as titles.

(4) Styles of return address available

are:

(i) For first-class mail

After 5 days, return to (this line optional)

JOHN DOE

1234 Fifth Avenue NEW YORK, N.Y., 10029

(ii) For third-class mail

After 5 days, return to

RICHARD ROE 2400 Fitch Avenue CHICAGO, ILL., 60645 Return Requested

(If sender desires return of undeliverable mail only of obvious value.)

CHARLES JONES

610 Seventh Avenue NEW YORK, N.Y., 10036

To expedite the delivery of mail on Long Island, the following style of return address is suggested.

FRANK BROWN 1218 Clifford Avenue Jamaica, L.I., N.Y., 11413

Special

(d) Rejection of Envelopes. request envelopes may be rejected because of defective manufacture, or mistakes in printing, denomination, quality, size, etc. If the mistake was made by the purchaser, the value of the postage only will be returned. If the mistake was made by the post office or its contractor, the entire invoiced value of the envelopes will be returned.

[28 F.R. 11886, Nov. 7, 1963, as amended at 30 F.R. 11678, Sept. 11, 1965; 30 F.R. 13215, Oct. 16, 1965]

§ 31.4 Purchase of postage.

(a) Acceptable form of payment. Foreign or mutilated money is not acceptable. When the post office cannot make change, the exact amount of the purchase must be paid. Postal employees are not required to accept personal checks. To send money by mail use money order or certified check.

(b) Purchase receipts. If the purchaser wants a receipt for money paid for postage, prepare the receipt in advance and the postal employee will sign or stamp it when paid.

(c) Postage due. Postage due must be paid in cash. Postage-due stamps may not be used for paying postage. They may be purchased, for stamp collections only, through the Philatelic Sales Agency, Post Office Department, Washington, D.C., 20260.

[26 F.R. 11561, Dec. 6, 1961]

§ 31.5 Exchanges of stamps.

(a) Post office mistakes. Mistakes in selling damaged or unserviceable stamps may be corrected by the post office by exchanging stamps at full value.

(b) Purchaser's mistakes. Mistakes made by purchaser in buying adhesive stamps of the wrong denomination, or stamped envelopes or postal cards of the wrong kind, size, or denomination may be corrected by exchanging stamps at full value.

(c) Unserviceable and spoiled envelopes or cards, and unused precanceled stamps. Unserviceable and spoiled stamped envelopes or postal cards, if uncanceled, and unused precanceled stamps, and postal cards, may be exchanged for other postage-stamped paper as follows:

(1) Stamped envelopes (mutilated no more than is necessary to remove con