Here is your chance to own the rare and prized Nikon O-7 which was made for the Nikon 10cm ED apochromat. I doubt you'll ever see one in this condition offered at a better price. These eyepieces are seldom seen in the West and difficult to find even in Japan, where they rarely change hands and sell at several times the price of the Pentax smc orthos. These eyepieces are renown for the precision with which Nikon figured the lenses and the resulting definition achieved in planetary and lunar observing.
Limited time offer, **SOLD** don't wait too long if you know what this is and want it.