There is a perfectly lucid and rational explanation for the Nazi Bell. Where it was firstlocated by the nazis in Wenceslas Mine (near Walbrrzych today) on the border between lower Silesia and the Czech republic, there was also a mine producing Uranium and Thorium ores. Known then as Wustegiersdorf and now as Gluszyca.
Testimony about the Nazi Bell came to light from recently declassified Polish files from the war crimes trial of SS Lt Gen Jakob Sporrenberg. He described the centrifuge which spun mercury with a porcelain container placed at the axle containing "Xerum 525" compounds including Beryllium.
If you spin mercury inside a powerful electro-magnetic field the mercury will fluoresce to plasma as it gives off ions. If then you place Beryllium within that plasma field it will get excited and give off slow neutrons.
Place Thorium 232 with the Beryllium and then you have neutron capture turning the Thorium into Uranium 233 ready for use in nuclear weapons.
We only have to look at Iran today to understand why Argentina would describe such a device as for peaceful purposes and providing cheap nuclear power in a bottle. It would have actually made Argentina a nuclear weapons power in the 1950s had this project delivered.
Anyway that's my opinion and I am sure many will disagree or tell me it was an anti gravity engine or such like. I simply remind people that Dr Karl Wirtz who worked on Nazi Germany's nuclear bomb projects, also joined the team at Hualmuel island in Argentina. The Argentinians themselves always claimed it was a nuclear project and not an anti-gravity project.
We also have the previously classified report of the Argentine Economic Ministry which disclosed that in May 1945 a German multi engined transport plane arrived in northern Argentina and unloaded a Bell device.
This was in the days before the internet and before 1990 when Sporrenberg's testimony about the bell was revealed. Prior to this, nobody knew what the Nazi Bell was or had even heard of it, so why does it appear in an Argentine report from 1945?