The second generation Ford GT is receiving all of the attention these days, and rightly so. Customer deliveries are now underway, keeping Ford's latest halo supercar in the spotlight. But its first generation predecessor has never been forgotten, just set aside for the time being. And they're still selling for major bucks. Take this 2005 GT, for example. It'll be up for auction later this month at RM Sotheby's Santa Monica event with an estimated price between $275,000 and $325,000.

For the record, the new GT costs around $450k, so the first gen is still very much holding its own, value wise. But this particular GT is quite special, which could be a reason for its high price. Not only is it just one of 58 examples produced in black without the customary Ford racing stripes, but was also signed by members of the GT team, including Bill Ford and Steve Saleen. All of the signatures are under the hood. It's equipped with just three options: a McIntosh radio, painted brake calipers and forged BBS wheels. There's only 5,800 miles on the odometer and, from what we can tell from photos alone, appears to be in pristine condition inside and out.

The winning bidder will also receive the GT's original books, window sticker, hang tags and a car cover. Power comes from a 5.4-liter supercharged V8 with 550 hp. Zero to 60 mph happens in a mere 3.3 seconds with top speed clocked at 205 mph. Even if someone ends up paying above $325k, we still think that's reasonable because a car like this, especially with those signatures and its rare color scheme, will only increase in value in the years to come. Photos courtesy of RM Auctions.