Two of the 11 political prisoners handed over by East Germany yesterday in exchange for Chilean former Communist Sen. Jorge Montes had worked for U.S. intelligence, according to informed sources here.

The sources said U.S. intelligence representatives were present during the handover, at the Herleshausen crossing point between East and West Germany, to identify the two prisoners.

One was then flown to a camp run by the U.S. Army's Counterintelligence Corps near Frankfurt, the sources said. The other, a 78-year-old sick man, was taken away from the checkpoint in an ambulance.

The sources said both had been jailed for life by the East Germans. According to the Chilean embassy here, the nine others had been serving prison terms of seven to 15 years, apparently for anti-state activities.

There was no further identification of the 11, except a reference by a West German official that they were "all Germans, whether from West or East."

Montes, detained after the 1973 military coup that ousted President Salbador Allende, was flown to Frankfurt Saturday aboard a scheduled Chilean airliner. He was put aboard a helicopter for the flight to Herlesausen, accompanied by a West German official.

Montes, 51, thanked East German Communist Party boss Erich Honecker for arranging his release, according to the official East German news agency. It was the Communist government's first public announcement of the exchange. The announcement made no mention of the release of any East Germans.