I have the following pairs of UO "classic" orthos for sale. All are in very good to excellent condition and have lens caps though only a few have boxes. I have been using them in a Denkmeier binoviewer for planetary viewing and am only selling them as I have now put together a double set of Pentax SMC orthos:
Pair 7mm UOs
Pair 9mm UOs
Pair 12.5mm UOs
Pair 18mm UOs
Price: Any pair is $90 shipped in CONUS or singly at $48 each (preference given to sales of pairs. Take them all for $340 shipped in CONUS.