Precisionsound has released Koestler Rigoletto, a free sampleset of an air driven portable organ from the -50's -60's made in Germany.
The Koestler has been sampled in stereo and contains release samples. It consists of 99 24bit WAV files and 2 programs, "Broken" & "Fixed" for HALion & Kontakt. You can choose between the 24bit version (HALion/Kontakt) and the 16bit sfz version.
Koestler Rigoletto is free, although they require you to complete a survey before downloading.