Audio Museum...what would you want?

As I mentioned in a post to another thread, one of my long time fantisies has been that some day I'll have the dough to buy back all the old gear I've sold over the years, and have a museum of my old equipment. I'd start with the Empire Troubador turntable I bought in high school, as well as my first Marantz amp (it had beautiful big blue meters!!) Of course, I'd also have to find an intact Infinity Black Widow tone arm on a Kenwood KD-500, a pair of Dahlquist DQ-10s...you get the idea.

The question is, what component would YOU most want to have for your personal audio museum?