The depth of field is way too narrow for a shot with so much detail around the edges. It also seems a bit underexposed, the mid-tones could be brought up a bit.
Interesting subject to use for a texture challenge. Feels like the scales of an animal. Would love to see more details in the coins themselves. A little more focus would helps to keep the shot even more interesting, but otherwise a good idea. "7"
Your use of angled lighting did bring out texture here. To make this shot a bit better (imho) a bit bigger dof would help me get more texture (as the softness of focus loses the texture) and the lighting could be stronger - I find it a bit dark)
Interesting approach - quality of image has let this down a touch, as that detail that would really show the texture has disappeared. You have kept some tactile quality though, which is good.