The following appears to be a copy of the only circulated example of J1512/P1676. It was offered as a replica on Ebay in October 2016. Other examples have been seen including one owned by your editor.
The most obvious differences include the 'I' and second 'U' in 'Pluribus' being centered over a dentil. On the original the 'I' and 'U' are between 2 dentils. On the reverse, the most obvious difference is in some of the berries being fully round balls on the copy. Some of the originals, especially the one closest to the scroll is merged into the stalk and not nearly as circular.
The true circulated example is in a private mid-west collection.