That is definitely a 1960's Edmund 6" f/8 reflector. The mount is quite solid, though, this one needs some cleaning and dressing up. As pointed out by Robert, the optics are from the same company that made them for Criterion. I have two of those scopes and they are excellent!

The EPs are, in order, a 1/2" Ramsden, 1" Kellner, 2x - 3x variable Barlow. The box is the original one in which all three were shipped.

CS

Steve