This is a TeleVue Plossl 17mm eyepiece for 1.25 inch focusers. It is in near mint condition and includes the slip on rubber eyecup. I got this in the early 90's, but never completed the project and it was never used. This was made in Japan, and is referred to as a "Circle-R smoothie" to differentiate it from earlier and later versions.
Filed under: Eyepieces & Accessories