Hi,
Thanks for the comments, some thinking to do perhaps. I have an EF adaptor so will try to get some use out of the lens in the next month or so and then decide what to do.
Mine doesn't have the hood with it, or the cover, but the optics and the mechanisms themselves seem to be in good condition - just a very small nick on the front element which, from what I can tell, doesn't seem to affect the IQ.
Thanks,
Andrew