Antonescu played 13 games for Romania making his debut on 29 October 1972 under coach Angelo Niculescu in a 2–0 home victory against Albania at the 1974 World Cup qualifiers in which he appeared in a total of five matches, including Romania's biggest ever victory, a 9–0 against Finland.
Antonescu played 13 games for Romania, making his debut on October 29, 1972, under coach Angelo Niculescu in a 2-0 home victory against Albania in World Cup qualifiers. He participated in five matches, including Romania's biggest win ever, a 9-0 triumph over Finland.