I have two secondaries and holders for sale. The 1.83 is only 12 weeks old(I bought the wrong size from discovery) and in new condition. $55 shipped-pending
The 1.52 is in excellent condition. It is missing one screw on the holder case but is in otherwise new condition(I think this is a Novak). $45 shipped.
I am selling to raise funds for an astrosystems telekit.