A DDO on this series is scarce after 1973. Just a few for on the obverses. http://www.varietyvista.com/07%20Ro...Listings.htm Note the ones on the listings that are underlined? They are the years that have a DDO. (Pretty much a waste of time searching for these on the obverses of dimes. There are more on on the newer ones on DDR's for the dimes. But look to see what to look for on these. As they are not what you are looking for yet http://www.varietyvista.com/07%20Ro...Listings.htm The single squeeze newer dies have the hub doubling more in the center of the designs. So train you eyes on what to look for on these.
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