B+W BW 86mm UV haze 010 F-pro filter. MRC version, in excellent shape. Brass frame. No mark on filter frame but has some very light sratches on the glass (no impact on the IQ, I already tested and confirmed). No plastic box or paper box, just the filter. I used it with my Sigma 150-500 OS that was sold.
This one: http://www.bhphotovideo.com/c/product/11996-REG/B_W_66045128_86mm_UV_Haze_010.html
