On September 3, 1783, a treaty between the United States and Great Britain was signed in Paris. The pact officially ended the Revolutionary War and doubled the size of the United States. This weekend we're celebrating the 200th anniversary of that signing with fireworks, parades, concerts and ceremonies. The hoopla starts Friday at 1:30 on the Mall at Fourth and Independence Avenue NW, where a regimental fife-and-drum corps will play patriotic tunes. At 2, stamp collectors can buy first-day issues of the Treaty of Paris commemorative stamps issued by the United States and France. Postmaster General William F. Bolger and French Postal Administrator Bernard Vanier will host the ceremonies. On Saturday night in Annapolis, where Congress was in session when the treaty was ratified, there'll be a fireworks display over the Severn River across from the United States Naval Academy at 8:30. Boats should anchor at least 300 yards offshore for safety. There'll be free shuttle buses running to the City Dock area from the Navy-Marine Corps Stadium from 9 a.m. to 11 p.m. if you want to watch the works on land. You can also enter the Naval Academy at Gate 1 and view the display on Farragut Field. Prior to the fireworks, there will be a 21-gun salute and a concert by the Naval Academy Band. To get to the stadium, exit U.S. 50 at Rowe Boulevard and turn right at the first light. Handicapped parking will be available on the Naval Academy grounds; follow Rowe Boulevard, turn left at College Avenue, right onto King George Street and enter the school through Gate 1. Wait! There's more. The National Symphony Orchestra is playing Sunday at 8 p.m. on the west lawn of the Capitol featuring the premiere of "Fanfare for Peace," written by Stephen D. Burton, for The Bicentenial. Call 466-5430.