When I saw this at auction, I drew a blank. I knew nothing about the lens, so I did some research. A 70-150 should do well given its short zoom range, the XR line is well thought of, and it's reasonably small at 450g and using 52mm filters. OK then: why not submit a few bucks over the minimum and watch? Well, that was enough.
And its performance is disappointing - in that it makes me wonder why I own so many other lenses!
This is one talented and fun lens. It's also a bit of a pioneer with its separate zoom and focus rings despite being made in the 1-touch era, and more impressive it has an internal zoom mechanism - only focusing causes this lens to change size. It has a sorta-macro mode, less than 1:5 closeup but still handy. I've had a difficult time wrestling it off my k-x, it's that much fun and the images are that good.
Here's the image folder in Picasa: enjoy! I know I enjoyed making them.