What is the weight of this coin. If it is 2.5 grams, then it is a zinc cent. They had an issue with plating over zinc dust. thus the rough surface. Also the glare from you lighting makes if stronger than normal. I'm guessing you are you a ring light or a multiple LED lights. Thus it drowns the coin with glare. A single light source is better for micro images. That allows light and shadows to happen. On yours their is just light and light. Not shadows. Shadows are nice to show spread and contour, on the coins devices. Too much light and all you get is glare.
This image was the last image I took with the ring light:

When light and shadows are better for micro images:

See how the light has one direction, allowing light contour and shadows to appear:

Note on these images I chose not to direct the light into the spot you would think would need the light, but I allowed the shadows to appear on the interesting areas:

That way the spot light doesn't drown the devices you want to see. Kind of like the term, "A whisper is sometimes better, than yelling"
This image was the last image I took with the ring light:

When light and shadows are better for micro images:

See how the light has one direction, allowing light contour and shadows to appear:

Note on these images I chose not to direct the light into the spot you would think would need the light, but I allowed the shadows to appear on the interesting areas:

That way the spot light doesn't drown the devices you want to see. Kind of like the term, "A whisper is sometimes better, than yelling"































