$220 shipped USPS Priority to the lower 48. Paypal preferred.
This is a Zeiss microscope head modified for astro use, particularly Newtonians. An integrated (easily removable) RKE barlow element allows focus in Newtonians with 2" focusers, and yields around 2X. It might also be used in some 1.25" setups that have adequate in-focus. Accepts 1.25" EP's.
This one is great for lunar and planetary observing, but seems a little dim for deep sky. It has 21mm aperture, superb coatings, and factory blackened prism sides.
It's in excellent condition, with minor external paint & barrel scrapes from normal use.