It's the one with 20mm eye relief, the twist-up eyecup, 72 Deg. FOV and APM screw on 1.25" adapter. See APMs website. It is in very good condition with caps. For sale for $165 shipped ConUS. Paypal preferred.
I purchased this last week and could not quite reach in focus (barely) with it in the scope in which I was going to use it. I could probably raise the mirror a few mm, but I'm too lazy. As if it matters, it is kind of a cool looking eyepiece, and I have a huch it gives pretty good views.
Thanks for looking, John