I purchased two of these eyepieces for use with a bino-viewer. As it turns out, the assembly is just too heavy for my setup. I am replacing them with two 20 mm plossls. Less field, but much less weight. I have decided to keep one of the panoptics and sell the other. The 22mm panoptic is the most useful eyepiece in my tool kit.
This eyepiece is mint, used only three times. Includes the original box.
My price includes Priority Mail in US. More if outside US.