What can you see with a coin microscope? You may see residues of cleaning materials or brush fibers stuck in cracks. Ancient bronze coins might have microscopic lead pockets. Fine red fibers usually mean the coin spent some time in a flocked tray. Seams and file marks on the edges may help define authenticity. Random scratches are usually from normal use. Scratches following a pattern suggest the coin was cleaned on a buffer or by hand.
As you increase the magnification, you will see a smaller field of view.
Don't get a coin microscope with too much power! For coins, a good range is 10x-30x.
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This image shows a penny at 20x.
View images of pennies at different magnifications.
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