Joh Mustad AB Klavitron (type: IE-40 C), portable tube organ 60s

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Interesting bit of history. See this previous post from 2005 for additional pics, info, and context.

SN 691 via this listing

"Swedish made electric tube/valve organ from the 60s in great condition. Portable with a cover that can hold the legs, original tele cable and the music stand.

All original tubes are working and it tunes up nicely.

Same manufacturer as the Tubon keytar but this has full polyphony a optically actuated volume knee bar and a lot more sound options.

It is like a museum piece but with a great sound."