Marc Antony

Nor have I. This one looks too good to be real. While I don't see any outward signs of it being cast, I have doubts about it. If it's real it's the best example I've ever seen and would be worth a lot of money.

I M DVBIVS

This coin if genuine, has a potentially high value, and therefore a great amount of due diligence should be carried out, including close examination 'in hand' by an intending buyer, or that the reputation of the seller is of the highest order, and offers a no question money back guarantee, with a proven record that it will be honoured.

No detailed pictures of the of the edge.
Close examination of the edge of Roman silver much more easily helps in the identification of fakes.
Would never even be slightly interested in buying this piece without them.

No wear evident
'As struck' Roman silver coins do not have the surface texture that this coin has.
My opinion is that this piece is a high pressure cast.

Would like to see what the edge looks like. If you can get pics by all means post them.

I don't think the edges will help all that much. The coin looks to be struck !

But looking at the many examples on wildwinds the legends do not look right to me. Most examples show lettering of widely varying heights on the same coin with little care given to consistency ..... and the letters tend to be straighter (top to bottom of the coin) whereas these letters (the ship side) tend to align outward from the center. I notice also that most of the letter A (ANT & AVG) on the wildwinds' examples tend to resemble more a Greek delta, not too surprising since Antony was in the east and the mint workers were probably Greek speakers.

The skill of the forgers is giving me headaches ! As technology gives them more tools to make dies to produce a 'product' it is beginning to seem like a collector need find them "in situ" to be 100% sure of anything.

I doubt that coin is genuine. For one thing, the surface is too flat. For another, it has tiny bumps in the fields (above the galley, left of the eagle's wing, left of the left standard). Look at genuine ones from somewhere else, say the CNG archive. They don't look like that coin. Surely it is a modern reproduction.

Here are 3 additional images from the seller he/she sent when I emailed.
Can anyone tell if these are real or likely fake based on these?

I don't like what I see. The flan seems rather thick and the pics are not good enough to enlarge very much. With minor magnification I am getting major pixelation.
Republican silver is outside my area interest but this one "smells" funny to me.