Interested in antique brass monocular microscope as used in Med classes years ago. Also 1960's vintage parfocal binocular model.

I did some shopping for you, but I'm not sure what your budget is.

This is an antique brass scope

http://showcase.goantiques.com/detail,antique-binocular-microscope,898403.html

If you want to spend some money, check out this site as well:
http://www.asiuk.net/microscopes.htm

And you can find some on ebay.
Good luck!