This is a rare Takahashi 32mm Erfle in mint condition in original box and with original paper! This eyepiece can be used with 36mm diameter system or with the 43mm diameter system with included adapter. The optics are absolutely pristine with very nice multicoatings. No scratches, no chips, and no defects whatsoever in the optics. Cosmetically it is in immaculate condition. $190 plus shipping.