This is a five-element 'pseudo-Masuyama' design like the Takahashi LE series. The fifth element allows for greater correction compared to Plossls.
The design was also used in the classic Celestron Ultimas, Parks Gold Series & Baader Eudiascopic eyepieces. These are considered by many to be as good as Tele Vue Plossls.
AFOV is 52°.
It is made in Japan.
It's in near mint condition. Comes with rubber winged eye guard and generic end caps.
Price is $60 plus post or see my Wanted ads for possible trade options.
