Biggest Ever Ad Account Shift

Burger King Corp., the nation’s No. 2 hamburger chain hit recently by sagging sales, said today it had selected N. W. Ayer Inc. for its $200-million domestic advertising account, severing an 11-year association with J. Walter Thompson USA. It was the biggest single account change ever, industry analysts said.

Ayer, Thompson and D’Arcy Masius Benton & Bowles had been identified last month as being finalists for the account.