This is an Orion Explorer II 10mm eyepiece in the .965 inch size used by most japanese and starter level scopes. It got to me disassembled, but I cleaned it up and put it back together and it seems to work just fine. I tested it in my microscope, but I don't have any telescopes with a .965" focuser right now. It is possible I may have a lens in backwards, but it is easy to take apart and rearrange if necessary. Appears to be similar to a Plossl design with about 50* FOV. Will definitely outperform the junky EP's they ship with the low end Meade or Celestron scopes.
$15 shipped. I prefer paypal, but will take a money order in a pinch.