By now, the engraver is used to putting Sue Keeney's name on theb ig silver cup that lists the winners of the Women's District Golf Association championship over the last 53 years.

It will be inscribed again for the third time in four years - and perhaps for the last time - by virtue of her having defeated Sharon Briggs, 4 and 3, at Montogmery Village yesterday in the WDGA final.

Only the name of last years champion, Vikki Staton, interrupts the run of Keeney's name on the cup since 1974. And Keeney was runner-up to Staton.

One of the areas outstanding golfers, Keeney will be moving in August to West Palm Beach, Fla., where her husband, Tom, an Air Force lieutenant colonel, has been assigned for the next four years.

During the four years the Keeneys have lived here, she won the women's championship at her home course, Army Navy, each year and earlier this year won the Keefer Cup.

"I've got to prove myself all over again in Florida," she said, recalling how she enjoyed playing in a citrusbolt tournament in which no one knew her "and no one cared how I did."

Playing in this area, she said, has "brought my golf game together again because it's such a highly competitive area. If you're going to win, you have to play well."

Keeney was two up after the front nine yesterday and went three up on the 10th hole with a per 4. Both golfers bogeyed Nos. 11 through 13 and parred No. 14. The match ended on the 15th hole as Briggs could do no better than a bogey-5 to Keeneys par.

Keeney had four bogeys for the day. Briggs had the only birdie, that coming on the par-five sixth hole.

Before the move to Florida, Keeney said, she will try to qualify for the Women's Open in late July at Chaska, Minn., and for the national amateur in Cincinnati in mid-August.

Asked why she intended to compete in the midst of moving, Keeney said, "I'm not going to get any younger and my golf game is as good as it's been in years. And, like the World Trade Center, it's there."

Keeney played in the national amateur in 1960, making the last 16 and lost in the third round in 1961.

If she does not qualify for the Open, she said, she will compete in te Virginia State Ameteur championship, in which she has made the semi-finals twice.

Kenney, who took up golf as a child to help combat polio in her right leg, has won a number of other local championships, including the Farmington Invitational, the Payne Cup and hte Carpenter Williams tourney this year, the Corby Cup in 1973 and the Pepsi championship at Salibury in 1974.