Download the brochure from Grady's site and look through it. I looked (quickly) and it "looks like" that outboard transom edge (the left and right sides of the transom board) has a curve to it, whereas in the brochure, the boats look like that edge is much straighter. But that could just be the angle of the picture(s). There are some similarities to the Pamlico, though. You could also contact Grady directly.
But... what's the purpose of knowing? Looks to be in pretty nice shape, though! The wood looks clean and straight.