From memory only, it looks very much like this one:
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=321619960The side-to-side lever, the safety, the pattern on the barrels and down the middle of them, the stock, the removable cover under the barrels, and so on, are all as I remember them.
One reason I'm trying to avoid using an online site is that my mom doesn't want to deal with shipping it to the end user/buyer; she would prefer going through an intermediary -- one who could also clean it up and provide an accurate description and condition grading would be useful, too.