Contact marks are incuse. An over date would be raised. This coin is showing damage on the mintmark areas. There are also different things that can happen that are also not an over mintmark issue:
A broken post issue:

Note on the top image, the post has broken off the of the die below the fields, leaving raised are on the top of where the mintmark would have been. This again is not an over mintmark issue. It is taller than a normal mintmark. On a Over mintmark, the mintmark would be lower than the final punched mintmark. Note the xample below:
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Note the 'D' hiding? Also most of the over mintmarks ended before the 1960's