Here is an interesting lens. This is a canon 85mm f1.9 lens block. It appears to be the same lens as the canon rangefinder lens. But it is just the lens and aperture.. no focusing, no mount.
But its in great shape! Maybe good for a project or to replace a damages rangefinder lens.
$105 shipped in the US.
I have one like this but it's got the full TV camera mount. Still haven't figured out a way to get it onto a camera besides holding it against an SLR for semi-close ups but haven't put that much thought into it.
Quite nice results from what I've used it for thus far.