Alan this is a combo organ, not the Hohner Electra Melodica, one of my first keyboard was a Farfisa Combo Organ. But I did own in the 70’s a Hohner D6 Clavinet. (See picture) far right sitting on top of my Fender Rhodes. For you syntheziser fans dig my Arp 2600. Picture was taken during a performance at Disneyland. I can’t imagine hauling all that equipment around these days.
The Hohner Organas are simple reed organs with one set of accordion reeds, driven by an electric fan. It has a lever which works kind of a swell on an organ. Look for Organas on youtube, there are several models.