About: http://webisa.webdatacommons.org/185228439

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	If moving your hand closer to the volume makes it louder, I would guess it is a forerunner of the Elysian, if one of the knobs is a switch I would guess Melodia.
http://www.w3.org/ns/prov#wasQuotedFrom	thereminworld.com