Five of the 10 1976 Washington International Horse Show jump winners will be on hand Sunday for the $15,000 Jumper Classic, the closing event of the 124th annual Upperville Colt and Horse Show. These five accounted for seven victories in the International.

The show opens Monday with the ponies and junior hunters performing in Grafton Ring. The first class is scheduled to be called at 8 a.m. That is also the starting time for each day of the show through Saturday. Sunday's jumper classic is scheduled fthrough Saturday. Sunday's jumper classic is scheduled for 1.30 p.m.

Also on the entry list for the classic are three horses which have won the Washington International's President Cup, one of the premier jumping events in the world. Idle Dice, Harry Gill's legendary gelding, won the cup in 1970 and 1971. The United States Equestrian Team's Viscount won the event in 1975 while showing for France.

Mr. Demeanor, the Deerridge Farm's 9-year-old gelding which shared the President's Cup with Harry Gill's Number One Spy in 1976, is also entered.

The six other jump winners from the International are The Cardinal, which won the Eisenhower Class and a Time Jumpoff event; Mystic, and Tuscaloosa.

Michele McEvoy, who won the Classic in 1975, will handle two of her horses from High Hopes Farm, Semi-Pro and Night Murmur. Rodney Jenkins, the winner of the first Classic in 1974, will ride Idle Dice, Mr.Demeanor and Icey Paws. Last year's winner, Melanie Smith, who rod Radnor II to victory, is not entered.

However exciting the jumper classic, Upperville is still noted for its hunter competition, plus it halfbred and throughbred breeding classes. Both the $1,500 Hunter Classic, and the breeding championship, will be decided Saturday.

Friday, most of the hunter titles will be decided while Thursday's top tricolor will be given to Small Working Hunter winner.