MUNICH -- So many East German spies are coming in from the cold that Western intelligence agencies are overwhelmed as they try to sort out the information from these defectors and the files they bring.

Not that the West is complaining about the windfall -- it's the espionage equivalent of stumbling onto King Solomon's mines. For the Soviet Union, whose KGB worked closely with East German spies, it's probably the greatest intelligence loss since World War II.

The Western mood is "exultant," according to one West German intelligence official. He and others are preparing for a highly secret meeting to be held here soon between top U.S. and West German intelligence officials. They'll sift through reams of information received so far from a deluge of hundreds of East German defectors.

There have already been almost daily meetings between the West German foreign intelligence service, the BND, and the Central Intelligence Agency here and in Washington since the Berlin Wall fell late last year. CIA and BND sources describe their cooperation on the "take" as first rate.

The East German secret services came under the State Security Ministry. Defectors with the most value to the CIA and the BND come from the ministry's foreign intelligence service, or HVA, by its German initials.

Except for a few top-notch HVA defectors who've revealed excellent information, intelligence sources say, no key people at the top of the service have come over. A top West German counterespionage official said they are "fanatic and ideological about communism" and unlikely to defect. Worse, he added, they transferred more than a tenth of their most sensitive files to Moscow last year as reformist East German officials moved in.

Even without their defection, the HVA has changed its tack. "Since last February," the official said, "we have no sign or information that the GDR {East Germany} is spying on us. That's when the East Germans stopped espionage and entered into secret agreements of cooperation with us."

The most important defector so far, according to these intelligence sources, is a top ministry official named Alexander Schalck-Golodkowski. He was East Germany's chief foreign trader until he "jumped" the wall last November. He was jailed briefly in West Berlin but was released for extensive debriefings on East German intelligence activities. In his guise as a trader, he worked full-time with cover firms, one intelligence source told us: "So he has shown us all the firms the East Germans and KGB intelligence agents use for cover around the world."

Most defectors, so far, have come from the Stasi, the dreaded secret police that East Germany used to spy on its own people. Stasi employed 85,000 people full-time and paid 109,000 citizen-informants. Some 2,100 agents' sole task was to steam open mail while another 1,052 tapped phones.

Our sources estimated Stasi kept files on 5 million people, nearly one-third of the population.

East German officials want to destroy the files; West Germany would first like a peek at them. They could show the West whom to trust. Negotiations are under way.