Uh, at the risk of being labeled a "nay-sayer", it would be worth about half what the tubes alone bring on the open market. At least around here that's been the rule. For some reason, that generic type tube is more sought-after than the equipment that uses it, whether it has the tubes in it or not.
Go figure.
Could be that someone who thinks about buying a 30 year-old linear is thinking about the next set of tubes, and what they'll cost down the line?
"Clean" is all very nice, make no mistake. But if "clean" also means "original", then selling it is the only smart thing to do. Even a linear wrapped in plastic and stored in a controlled environment will have oxides form in controls, and on switch and relay contact surfaces. Unless that stuff gets cleaned off, those contacts may arc when they are switched. That can turn a "good' (but oxidized) contact into a pitted, worn-out contact. And sooner than you think.
Original filter capacitors (and bleeders) will have to be replaced before you'll get any reliable service from it. Those parts are not meant to last 20 years, let alone 30. If they are still good, it's because the mileage is very low. Once the normal stresses of operating are placed on those parts, they ussually "remember" how old they really are in a month or three. Then they fail. How many other parts will fall in the line of dominoes is hard to predict, except for one factor. The bigger the fuse in line, the more additional items will "pop" beyond just filter capacitors.
Keeping it to use kinda sticks you with the cost of 30-year maintenance items. Sell it, and those become the buyer's problem.
Not too different from finding a 1977 car in a barn under a tarp. Might start, might run down the block. Just don't start any long road trips on those 1977 tires, or hoses, or brake cylinders, or crank seals, or,,,, or.. You get the idea.
73
