Tamron AF 17-50mm F/2.8 XR Di-II LD SP Aspherical (IF) for Canon EF mount DSLR's. Used but nothing wrong with it. I just have better lenses and don't use this much. About a year old. No scratches on the element, no mold and no dust. $350 shipped. PM if interested.
And an example of a picture from this lens...
And an example of a picture from this lens...