I know this may seem like a strange request, but I was wondering if anyone had any insight on how to locate and purchase an old saddle. I'm trying to refurbish my girlfriend's bike while she's gone for the summer, but the saddle has me stumped. Ideally, I want the bike to look the same as it did when she left... except with some of the wear and tear removed. The bike is a Trek 4500 circa 2008 or so, so finding the original saddle is proving to be difficult (I also don't think it's had a bath since it was purchased). I know it's a Bontrager Select, but aside from that, I can't find any model numbers or distinguishing elements at all. Does anyone have any input on this, or am I up the creek without a paddle?

Attached is an image the bike model in question