This is a rare (first one i've ever seen) Vernonscope Erfle eyepiece.
Aluminum body, from what I can see 6 elements in 3 groups. 2" barrel.
FOV is approx. 65 deg apparent. Very nice high contrast images.
Barrel shows some wear and bottom of lower element shows some superficial mottling on the coating but I've used the eyepiece on
many objects (Moon, daylight) and cannot detect any problems from
the coating mottling.
Paypal or money order please.
Shipping is $6.00.
Email with any questions.