Cokin X pro filter system kit. Including holder, adapter rings and case.
Filters include: blue/yellow polacolour , ND 1, 2 and 10 stop, circular polarizer, graduated 1, 2 and 3 stop, graduated blue and tabac. Adapter rings: 62, 75 and 77 mm and some additional step down rings for 49 and 55mm. In good used condition, I also have boxes for most of the filters.
These were great for use with a full frame DSLR and a super wide angle lens (10-20 mm) as there is no vignetting.