This is my old GPS. It is a monochrome Furuno, model 1600. I paid about $500 for it at Boater's World about 9 years ago. I paid around $100 for the antenna. It comes with the owner's manual, mount, protective cover and antenna. You'll need to get the wiring and a mounting post for the antenna and you'll be good to go. It also comes with a removable Navionics chart card for the Strait of Juan de Fuca. Gives low resolution detail all around western Washington and high detail from Port Townend to Neah Bay. I used it for years fishing out of Sekiu and it saved my bacon more than once when the fog set in!
If you're looking for a low cost GPS this is the unit for you. Asking $ 50/OBO.... would be willing to trade for vintage steelhead and salmon gear