I've been taking lots of 'homage' to vintage nudes photographs over the past couple of years with contemporary models, basically imitating the poses, styles, locations, and production values of 1920's to 1960's nude images. I probably have at least a couple of thousand good ones. Do you think there's a way to market them as their own 'stock collection' or part of a stock collection? Even if there isn't a demand now, I am brainstorming ways to create a demand, for example, offering them as an alternative to the billions of porno, fine art nude, erotic imagery, fantasy imagery that have proliferated since the digital explosion. Do you think this could work or is it an exercise in futility, and if so, will I at least get in 8) some good aerobics?

futility.
How would a "fine art" nude be used as a STOCK image?
I don't see a saleable use.

I think they could be useful to some agencies. Those kind of stocks sometimes to very well, some people may be buying for art in their homes instead of ads. But make sure you read the rules to the sites as almost all of them don't allow shots of genitals. If it is going to be accepted it needs to have an art aspect instead of a porn look.