This is a used HandBike hand powered recumbent bicycle. It appears to be in good shape although it does have some scrapes and scratches on it. I just replaced the tires and tubes, and have ridden it a little. It could probably use a tune up, as it has not been ridden in quite a while. When I got it the tires were completely dry rotted.
I'm pretty sure that this is one of the original versions made by Chris Schwandt of New Dimensions Design, probably in the early 1990's.
The crank set and derailleur are Shimano Deore. The seat back is adjustable. The drive train can be tilted forward and the seat back can also be removed completely to make loading and/or storage easier.
The current models are made by Mobility Engineering http://www.mobilityeng.com/
Here's a pic: http://rap.midco.net/grissop/ebay/hand1.jpg
For more information or more pictures, email me at firstname.lastname@example.org