Focus Issue With EOS 60d

Hey thanks for all the replies, I really do appreciate it.

I will give some additional information:

I'm using a tripod and I am using the computer to look at the coins before I make the picture, so in live view.

I use the buttons to get the best focus manually, when I use auto focus the result is blurry or cant find the coin.
With these arrows:



The camera WAS 37cm (14.5 inch) above the coin and NOW I changed it to 48.5cm (19 inch), I also changed the ISO back to 100 and f/16 like suggested.

The result is as follows:



Seems better, maybe the extra distance was needed?

rmpsrpms mentioned "Focusing on a middle feature" how do I do that?

Also I try and keep vibration to a minimum, I gently press the spacebar to take the shot and keep my arms off my desk during this whole time.

I would suggest replacing the current coin with a low relief one, like a common circulating coin, to rule out technical problems like vibration and inaccurate focusing. I have little faith in tripods.