This is ultra-premium quality eyepiece, 6 elements, 4 groups design. The Eye Relief is 20mm. It is fully SMC (Super MultiCoated), with blackened lens edges for better contrast, and use ED (extra low dispersion) glass elements to minimize chromatic aberrations and astigmatism. This eyepiece is even water proofed!
This eyepiece is brand new. I haven't opened the original seal yet!
I got it with the new pentax scope but I actually don't need it. Will consider to trade for a 16mm Nagler Type 5 or sell for $360 including shipping, obo. Remember Anacortes sells it for $439 + shipping!
Please send me a email if interested.