A 13-cent "Golf" stamped envelope will be issued April 7 during the Masters Golf Tournament at the Augusta National Golf Club, Augusta, Ga., according to a U.S. Postal Service announcement.

The envelope will show a golf club in four sequential positions (in outline black, green, blue and solid black) moving toward the point of impact with a golf ball. The ball will be embossed on the envelope, with "Golf" printed in blue and "USA" in green above the ball. To the right, also in green, is "13c." The three colors are applied by the rotogravure process, after which the ball is embossed on the envelope.

Guy Salvato of Columbus, Ohio, designed the golfing indicia. The envelope is being manufacture by the United States Envelop Co,of Williamsburg, Pa. There will be standard (6 3/4) and legal (No. 10) sizes, with window an without.

Golf envelopes will be placed on sale outside Augusta on April 8. Sets of four will also be available from the Philatelic Sales Division, Washington, D.C. 20265. The usual postage and handling charge of 50 cents per order will apply, plus a charge of 15 cents per envelope.

Order for first-day covers should be sent to "Golf Envelope, Postmaster, Augusta, GA 30901. The 6 3/4-size envelope will be supplied unless the large No. 10 size is specified. Window envelopes will not be provided. Orders must be postmarked on or before April 22 and should be accompanied by a personal check or money order, not cash or stamps. There is a limit of 200 covers per order.

Those ordering first-day cancellations are requested to send envelopes of an appropriate size or return address labels.

The 10-cent Lafayette commemorative will be issued at Charleston, S.C. June 13. marking the 200th anniversary of Lafayette's landing on the South Carolina coast north of Charleston. First-day sale details will be announced later.

Pueblo Indian pottery, produced between 1880 and 1920 and presently kept in museum collections, will be featured on four U.S. stamps that go on sale April 13 at Santa Fe, N.M. The jumbo-size stamps, designed by Ford Ruthling of New Mexico, will picture a Zia Pueblo pot now in the Museum of New Mexico (Santa Fe), a San Ildefonso pot from the Dencer Art Museum, a Hopi Pueblo pot from the Heard Museum (Phoenix) and a pot representing the Acoma Pueblo, now in the school of American Research (Santa Fe).

Printing will be in panes of 40 (10 blocks of four) on the gravure press, with five plate numbers. The individual stamp size will be 1.105 x 1.44 inches. Peter Cocci of the Bureau of Engraving and Printing modeled the four 13-cent stamps.

First-day cover collectors will have 15 days to obtain their own Pueblo Art stamps and affix them to covers for cancelling. Prepared covers must be forwarded to "First Day Cancellations, Postmaster, Santa Fe, N.M. 87501 no later than April 28. Alternatively, within the same dealine, envelopes with remittance for stamps to be affixed may be sent to "Pueblo Pottery Stamps," in care of the Santa Fe postmaster.

The 9-cent Freedom to Assemble stamp occupying the upper left corner of the $1-booklet pane released Friday in New York is entitled to separate catalog listing for at least three good reasons: Before Friday, the 9-cent value of the Americana postage issue was available only in sheet form (100 subjects). The booklet pane version is one a white paper (the sheet form was on gray paper) and it is now officially acknowledged that it is lightly smaller than the original. A reduction from .75 x .87 inches to .715 x .830 inches was necessary to conform to the booklet pane size, and a new master die was engraved for this purpose.

There were 695,335 first-day cancellations when the 13-cents Washington at Princeton commemorative was placed on sale Jan. 3 at Princeton, N.J., and 215,300 first-day cancellations for the 13-cent American Craftsman Bicentennial embossed envelopes.

Four of last year's commemoratives will be removed from sale by the Philatelic Sales Division as of March 31. All are 13-cents, recognizing Interphil, the telephone centennial, chemistry and Benjamin Franklin. Also going off sale is the 10-cent Seafaring Tradition-embossed envelope in two sizes.

Post offices having philatelic outlets have been notified that the five items are to be withdrawn from philatelic sale immediately after March 31, and placed on general sale until April 29. Collectors in areas lacking postal philatelic outlets may order these items from the philatelic Sales Division, U.S. Postal Service, Washington, D.C. 20265. There is a 50-cent handling charge for each order.

Canada's new 12-cent Elizabeth II coil, announced for March 1, appeared on schedule, but the six Wildflower stamps, originally scheduled for the same date, will be issued instead on April 22. A single Endangered Wildlife stamp showing as Eastern cougar will be released March 30, and another single, dedicated to the institution of Parliament, has been added to the schedule with May 3 as its first day of sale.

Two stamps due May 26 will honor Tom Thompson, and a single postal item - instead of four as originally planned - will be introduced Juned 30 to commemorate what is referred to as the 25th anniversary of Canadian-born governors general.

The single value commemorating the 50th anniversary of Peace Bridge, connecting Buffalo, N.Y. with Port Erie, Ont., is due Aug. 3.

Springpex '77, sponsored by the Springfield (Va.) Stamp Club, will be held Sunday, March 27 at the Holiday Inn, 6401 Brandon Ave., Springfield. A special show cover will be available for 50 cents from the Springfield Stamp Club, P.O. Box 544, Springfield, Va. 22050.

France will issue a 1.9-franc pictorial to mark Lindbergh's flight of 1927. Others issues include the 80-centimee "Le Souvenir Francais" (March 7), a three-franc item reproducing an original work by Vasarely (April 6) and a 1-franc pictorial with a view of Annecy (date not indicated). Also announced was a 1-franc Nature Conservation stamp for Andorra (April 4) picturing an ermine.

Malta will issue four striking stamps March 3 reproducing Flemish tapestries, and South West Africa has announced plans to release four stamps picturing the Namib desert.

A new "Castles" definitive has been introduced by the Federal Republic of Germany, replacing the "Prevention of Accidents" theme of the previous issue. The same denominations and designs will be produced for Berlin. Already issued are a 60-pfennig stamp portraying Marksburg Castle and a 200-pfenning (Burresheim Castle).

Subjects for other denominations in the new set are Glucksburg Castle (10pf.), Ludwigstein Castle (30pf.), Eltz Castle (40pf.), Neuschwanstein Castle (50pf.), Mespelbrunn Castle (70pf.) and Pfaueninsel Castel (190pf.). Berlin also plans a 20pf. value with a view of pfaueninsel.

Till Eulenspiegel, the legendary German prankster immortalized in music by Richard Strauss, will be the subject of a 50-pfennig commemorative for te Federal republic, and the moving of the Council of Europe to its new home in Strasbourg will be marked by a 140pfennig pictorial. Berlin, in its own right, wil honor sculptor Christian Daniel Rauch (1777-1957) on a 50-pfennig stamp.

Jamaica has completed its "old maps" issue by releasing four stamps Feb. 28. Denomiations are 9, 10, 25 and 40 cents, and the maps involved are dated 1661, 1670, 1680 and 1689, respectively.

So far, John E. Foxworth Jr. is the only nominee for the presidency of the American Philtelic Society. F. Burton Sellers, David L. Lidman and Ernest E. Fricks have been nominated so far for the board of vice presidents. COINS

Treasury and its Bureau of Engraving and Printing have gotten an assist from the Postal Service in the effort to promote circulation of the new $2 bills. Postmasters and fund custodians have been asked to encourage the use of these bills in routine change-making. Meanwhile, the Bureau of the Mint continues to explore the possibilities of introducing a new denomination to reduce demands for the 1-cent piece.

During January, the Mint began to produce 1977-dated coinage, including 4,308,000 Eisenhower dollars of the pre-Bicentennial type, 12,894,000 Kennedy half-dollars and 53,760,000 Washington quarters.

No years were indicated for the 89,910,000 dimes, 94,248,000 nickels and 774,905,688 cents, but presumably all were dated 1977.

Bicentennial coinage did carry over into the new year by way of part-silver proff and uncirculated sets delivered by the San Francisco Assay Office. The Mint reports that 9,045 of the 40 per cent silver Bicentennial proff sets were delivered, along with 22,820 of the part-silver uncirculated Bicentennial sets. For the first time in a long while, the Mint did not produce coins for any foreign governments during January.

The Denver Mint now has a collection of 7,320 oriental coins on display. Most of the coins, which are a gift from Japan, are in one large display, but a smaller unit show a sampling of currency used in Japan over a 1,300-year period. The coins are from a variety of Far Eastern countries and are described as "hand-polished."

Mary T. Brooks, who resigned as director of te Mint last month, has been named a consultant on international and numismatic and philatelic affairs for Paramount Coin Corp., Englewood, Ohio. She will serve as a goodwill ambassador for the company at national and international events, direct the company's public affairs and collector relations and help in the expansion of philatelic and numismatic programs.

Seven sterling silver medallions, commemorating highlights and achievements in the career of Charles A. Lindbergh, will be produced by the International Silver Co. of Meriden, Conn., for the Charles A. Lindbergh memorial Fund Committee. One medal, commemorating his solo transatlantic flight 50 years ago, will be larger than the others. The set will cost $244.65, and will appear over a period of seven months. The sponsoring committee, co-chaired by Gen. James H. Doolittle and former astronaut Neil A. Armstrong, hopes to establish a $5 million fund to provide fellowships for projects in are as associated with Lindbergh's various interests.