Unfortunately, the Hammonds are the only vintage organ worth anything intact and still used by rock and rollers and others across the globe. Any tone wheel organ, including the M's, L's and especially the C-3 and B-3 are highly sought after and worth much $$ (no power amp in the B or I think the C, as it required a separate tone cabinet.) ....I have been grabbing old organs from churches here in rural Iowa and have quite a few Hammonds and it is soooo tempting to grab those old tube amps...they even used a separate tube amp to drive the reverb tank so there are two power amps in many models. But it is an act of heresy to trash them for the amps. I had an old Gulbransen with an excellent tube amp hand wired in Chicago, it was worth about $30 so I took a chain saw to it and got the Leslie and tube stuff out, but the Gulbransen, Thomas, etc. are worth nothing so might as well grab the goodies out of them. I put the tube amp (2-6L6) in a guitar rig and wow!! I did get gobs of great old tubes out of the Hammonds, especially the 6V6 which I put in my old vintage guitar amps. Recall also that the first Sunn bass amps used a stock Mark III with a preamp slapped in a cabinet. If you have a Hammond tone wheel organ of any type I say sell it and use the $$ buy one of Bob's amps....do not trash them out for the amps!!! But this is another fascinating piece of Dyna history.