AU at best and that's just using your photos, which show it grainy and dull with normal circulation wear. That grainy look could be due to dipping, but it could just be the photo itself. How does it look in-hand to you?
Reduce your lighting, either by adjusting your aperture, shutter speed, or moving your lights further away from the coin, then try again. You're washing out the coin with the light.
Far as value ,I believe there are only 4 key dates in the Merc series! ,Slight wear on bands makes it extra fine!