Not that you don't have a good point in theory, but if you'd seen the inside of this thing, "vintage value" is the last concept that would come to mind. Though the skin is in great shape, the interior is a total loss, the door appearing to have been propped open to the Pacific northwest elements for decades.
Which suited my purposes wonderfully.
I have no plans to attempt a perfect restoration, but rather a reinterpretation of the Airstream idea. Think Ralph Lauren's re-dos, combined with new hardware. I'm thinking teak and holly flooring like the cabin of a yacht, chrome door handles from commercial walk-in refrigerators, etc. I'm also considering adding a porch light. They're just wonderful looking, and I think we'd make good use of it.
Because of my trailers poor shape my trailer's in -- missing nearly all original furniture, half the bathroom having fallen through the floor somewhere in Minnesota halfway home -- I won't lose any sleep over making really big changes. And, I'll sell the parts in good shape (lights, fixtures, etc.) to help other people stay original in their trailers.
Because I won't be ruining a perfectly restorable example of a vintage trailer, I think everyone wins!
Here's what I've got to clean out first...