I feel pretty certain my brother Dave owned a Farfisa organ at some point when I was very little. I distinctly remember the white accidentals and the black keys and maybe I even remember a volume swell thingy that stuck out the bottom.*
Farfisas are the poor-man's Hammond (which, in turn, is the poor-ish-man's actual pipe organ.) Farfisas have a unique sound and are the basis of a tremendous amount of psychedelic music from Pink Floyd to The Doors.
Combo Model F is a very sweet Farfisa emulator (VSTi). Sometimes you just need some Light My Fire-type sounds to do that thing for you.
*Was it a Farfisa Fast model? Am I just making up that thing about a piece of metal like a coat hangar that does swells? Am I in fact mistaking the entire thing? I have no idea.