I think the clean up debate is very interesting. I have often struggled with whether or not to not only clean up images, but even so far as whether to send for restoration. To Ben's point, if they are pieces of art, isn't it reasonable to clean and restore them? After all, if the art world is ok with cleaning and restoring Michelangelo's, The Last Supper, why wouldn't it be OK to clean and restore a photo that is far far less valuable?
I asked a similar question earlier this year about the 8x10 Burke photo I bought. The overwhelming response was to not restore it. So far I haven't as I am spending my money on photos, but I haven't fully decided.
What about this one? What would you do?