Nikon 17-55mm f/2.8 zoom lens in great condition.  My beloved walk-around lens... but, moving my street kit to Fuji so letting this go.  It's built like a tank and is arguably one of Nikon's finest zooms (don't let the DX badge fool you!).  If you have a crop-sensor Nikon, this is the standard zoom you want.  Constant, fast f/2.8 aperture throughout, quick to focus, very sharp and great color rendition.  Not technically an internal zoom, but pretty close.  No plastic body here... they don't make them like this anymore.