Marjorie Hemmendinger says it is still uncertain whether wood designercraftsman George Nakashima will make it to the opening of Full Circle galery's showing of his furniture. But the show and sale will open as scheduled this evening at 5-7:30.

Nakashima has shown a number of times at Full Circle, most recently about a year ago. "It was a rainy night, and the place was jam-packed," Hemmendinger said. "They always sell out."

For the current exhibit, Hemmendinger gathered "the complete range of every seating design he's ever done. Close to 30 pieces." All of them, priced from $100 to $1,000, are signed by the artist. Most are unique to this show.

Nakashima, whose designs are of the lean and clean Japanese style, is the man Nelson Rockefeller commissioned to furnish his Japanese house in Pocantico Hills, N.Y.

The exhibit runs through March 25 (638-4500). LECTURES, ROURS AND THINGS

... Anthropologist Bill Seward begins a series of slide-illustrated lectures on rugs and rug weaving customs of Asia Monor at the Trocadero gallery beginning March 18. The first concentrates on findings at archeological sites in Turkey and Iran and how these compare to contemporary practices (234-5656).

... Jennifer F. Goldsborough, consultant silver curator for the Maryland Historical Society, talks about 18th-century Annapolis Inc.'s continuing winter Annapolis Inc.'s continuing winter series. Tomorrow morning at 9:30 (267-8149).

... Two things at Catholic U. this week... Giorgio Cavaglieri, architect from New York, compares old and new architectural styles in New York and Paris tomorrow eve.

John Woodbridge is the speaker Wednesday night, also at 6:30 (635-5188).

... Friday, Christine Minter-Dowd leads the noon brown-bag talk at the George Washington Bicentennial Center in Alexandria. Minter-Dowd, guest curator of the center's "Made in Alexandria" decorative arts show, will talk about how she put the exhibit together (750-6677).

... The Smithsonian Associates are again taking a group to the Winthertur Museum of decorative arts in Delaware, March 24. Cost is $43, non-members (381-5157).

... Also from the Associates... Paul V. Gardner, retired curator of ceramics and glass at the National Museum of History and Technolgy, discusses Art Nouveau glass in the United States -- Tiffany and Carder -- this Thursday.

... Paul Muldawer, author and urban designer, talks about "designing cities with citizens" tomorrow at 8 p.m. NOW SHOWING

... Laney Oxman's uninhibited painted ceramics -- mostly takeoffs on the human form -- are at the A.D. Smull Gallery through the end of the month.

... A show of Alexandria potter Solveig Cox' story-book like pottery figures opens at the Jackie Chalkley gallery in Foxhall Square today. Through March 10 (686-8884).

... Japanese dolls and soft sculpture by Junko Matsubara Liesfeld and Toyoko Matsubara are at the Textile Museum through May 6. The motherdaughter team exhibit and sale honors Hina-Matsuri , the Japanese doll festival (667-0441).

... Cities and gardens of the 18th century, in 43 illustrations from the Virginia Museum, show at the Carlyle House in Alexandria, beginning tomorrow, through March 18 (549-2997).

... The Woodlawn Plantation needlework show in Mount Vernon, Va., starts this coming Sunday and continues through April 1. This is a juried exhibit that usually draws thousands of visitors (780-3118).

... The. Smithsonian displays all kinds of money from the Chase Manhattan Bank money collection. Gold coins, checks from famous persons and primitive currencies are at the National Museum of History and Technology through February 1980.

... Also beginning today... The Montgomery County Historical Society exhibits stepin' out clothes, worn by Montgomery Countians during the last century, at the Beall-Dawson House in Rockville. Through March (762-1492).

... Embossed paper prints by Julie Lee, depicting architectural details of 18th-century Quaker buildings in Waterford, Va., show tomorrow through March 24 at the Folger Shakespeare Library's Anne Hathaway Gallery (546-4800).

... Batik and stained glass from 15 different craftsmen are up at the Green Spring Farm Park in Alexandria, care of the Fairfax County Council of the Arts. Through April 15 (941-6066).

... Persian carpets from the Virginia Museum, 21 of them are at the Belmont estate near Fredericksburg, Va., beginning Tuesday, continuing through March 27. For directions call (703) 373-1776. FOR YOUR INFORMATION

... Victorian architecture and architects and 19th-century arts and crafts are among topics in "Victorian Album," a four-day seminar on American life, 1865-1900, at the National Archives beginning March 21. The Archives is co-sponsoring the event with the Victorian Society in America. Registration deadline is March 10 (523-3099).

... Kent Ultimus of the Bromwell Corp. leads a one-night workshop on wood stoves -- how to buy and install them safely -- at the Good Luck Community Center in Lanham, Md., March 20. The popularity boom of wood stoves has area building inspectors and fire marshalls concerned. Many owners are installing them without building permits and could be creating fire hazards.

Furthermore, some stoves do not carry the Underwriters Laboratory (UL) label, as required by law, which may cause some owners to lose fire insurance coverage if a fire occurs.

Cost for the workshop, 7:30-9:30 p.m., is $5. Call 552-1093.

... Volunteer guides are needed for the Green Spring Farm House, an historical landmark near Annandale now run as an arts and crafts gallery by the Fairfax County Council of the Arts. Call 941-6066 for information.

... Glenn McIntyre demonstrates colonial American gunsamithing March 10, 11, 24 and 25th at the Carlyle House in Alexandria (549-2997). CRAFTS AND SUCH

... the Maryland-National Capital Park and Planning Commission's calendar of activities for March is out. Among these are...

... Free classes in jewelry making and pewtersmithing at Prince George's Community College in Largo.

... Six weeks of classes in pottery, weaving, silkscreen and more at the Laurel City Artists Workshop

... Ceramics lessons with Karen Scheider.

... Batiking with Myra Selvadurai, for teachers as well as the not-so-knowledgable.

Call 277-2200, extension 257, for information on the above. THOSE OLD COLLECTIBLES

... Buyer's premiums may be challenged in court... The "Gray Letter," a weekly antiques newsletter, reports the British Antique Dealers Association (BADA) and the London and Provincial Antique Dealers Association (LAPADA) are seeking legal advice as a result of a recent British Customs announcement that buyer's premiums are taxable because they represent a "service rendered," not a part of the purchase price on antique items.

The "Gray Letter" quotes one BADA council member as saying, "There is a tremendous feeling among our members against this charge. They feel they should not have to pay it because, in their opinion, the auction houses are not giving a service to the buyer. It is just a form of double commission... If it is an illegal commission, then it will have to be forcefully stopped. ... It may come to a test case in the courts."

Auction houses are introducing buyer's premiums and sellee's commissions in the United States. They say the system, used for years in Europe, is necessary to cope with escalating prices.