[jjjnettie (Jeanette)]

Previously used with my G-Star ex camera, it's surplus to my needs now.
In very good condition. Can't see a mark on it.
Just slipped a camera lens onto it now, and it works a treat. All the threads are in good nick.

Here's the blurb from Steve's site.
C-EOS
This adapter connects a Canon EOS bayonet SLR lens to any C-Mount camera. The mount has a 1/4-20 mounting point so that it can be fixed to a tripod mount. The back focus is set to provide infinity focus adjustment specifically for astro imaging. These adapters are made to order.

I'm asking $50 delivered.