I have a 3.1" full thickness secondary with mint coatings - looking for a telescope home. This is a Coulter secondary, but has been given immaculate care - no scratches or other stupid cleaning effects that I have seen on other Coulter mirrors and secondaries. I guarantee you will be happy or money back. : ^ ). The $85 includes prompt shipping in U.S.
Thanks for reading my ad, and hang in there all you basement telescope builders! We are sort of a dying breed!