Looks like MD. On the inside area of the '9', I can see striation lines. (metal movement from one edge of metal leaving these lines that show the sharpness of that area) These would not be present on a hub doubled example. Note the arrows on this image. It points to metal striation lines that are visible: The more the metal slides, the more they are seen On this ATB Quarter you can see them very easily. Always caused by metal sliding from die movement. As mentioned, the hub doubling that creates a die doesn't show this. So a doubled die coin is struck from a die that has the hub doubling on the die. Thus the term Doubled Die.
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