Its an ancient counterfeit, struck in India sometime during the first century.
This specimen appears to be a die match to your coin:
(Note the reverse legend: PONTIK MAXIM)
A very interesting coin that I, at least, would be happy to own. But if you're looking for a "Tribute penny," then you'd best try again.
One last thing: this isn't really a "Tribute penny." Mark had a tendency to Latinize all denominations for his audience. In the east, Roman silver denarii would not have circulated much at this time. A drachm of some sort is a much more likely candidate.
