I have the above Canon lens for sale.  There are no scratches on any of the glass, it works perfectly but does not work with my 5D camera.  I bought it at Stan C. Reade three years ago but have not used it since getting the 5D almost 2 years ago.  The lens does have a couple of small scratches on the body that are the result of a fall shortly after purchasing.  I had it checked out by Canon and they re-calibrated it and it works perfectly.  Asking $450 for this lens.  I will post a photo of the lens later this weekend.  If interested you can contact me at gerhardk@mac.com

Gerhard 

P.S.  This was a photo that I took with after the re-calibration was done. The picture is taken from one of the bridges in Cambridge looking towards downtown Galt using Canon Digital Rebel camera.