Look at the difference of the hood bird.
On the 1000 mile car, the decal is not centered at the tail, and is farther away from the lip of the hood. Possibly new decal, and was not put on with the correct measurements.
On the 856 mile car, you can see how the edges of the hood bird has faded (maybe from the polishing and waxing). Also, on the tail, you can see where it is fading with the crease of the hood, and the decal itself looks like it is closer to the edge of the hood. Making it an original decal?
My guess is the 1000 mile car had a repaint.