Also up for bid are tapes of interviews by journalist Ray Coleman with John Lennon and Yoko Ono, and - somewhat disturbingly - recordings of one of Yoko's primal therapy sessions. It doesn't seem appropriate that such a thing would be made public.
Here's info on the George tape from Omega's auction listings:
UNHEARD AND UNRELEASED GEORGE HARRISON THE HITLER TAPES ABBEY ROAD CASSETTE. Containing track written and recorded by George in 1978. The insert lists the following recordings: Brazil Spoken Intro George Legs Harry, Brazil 1,2 & 3, Sooty Goes to Hawaii (Fast Version), 1 & 2, Mexican Song (George Harrison's Father In Law) and Bullshot (Vocals Legs Larry Smith). Recorded onto a Chrome Super II cassette with a reprinted Abbey Road insert .**This cassette is being sold as an artefact for personal use only. Reproduction of the material is strictly prohibited.**