6" Classical Cassegrain set from Coulter. Purchased the set in 1980 and never opened the box. Checked the optics out (still wrapped in original paper towels from Coulter) and both appear to be in perfect condition. I can supply pics if you want..I have not completely unwrapped either mirror.
The primay secondary seperation is shown at 16.9" and the optic set I believe is f15.
Update...Some of the responders have mentioned this may be a Dall Kirkham..not sure but either way the optical quality should be first rate.
This would make a nice scope or just as a "keeper" for the collector..
Make me an offer I can't refuse.
Thanks for looking.