This sale is for a fully working and optically superb Mamiya RZ67 250mm f4.5 telephoto lens, equivalent to about 120mm in 135 format.
This lens has almost no signs of use other than slight paint loss on the rear mounting ring. There are just a few tiny dust specks inside but otherwise this lens has really clean glass. A really superb lens at a bargain price. You will not find a better one in a hurry.