Hard to tell from this angle but it does look like Overman. If it is the Overman one I had the same couch and sold it for $650 about three years ago.
Where to find buyers? ... it's difficult if you don't have a shop/website that has an existing reputation, so you may want to consign it to a 20th century design shop in your area. Otherwise, eBay, ads etc...
Good luck!
Barry Bryant GOMOD.COM :: bringing modern design home