I Am Sure This Is Not Genuine. But....

If you do an XRF analysis, look for trace metals, not the purity of the silver.

Those lines are very odd. At magnification I would expect to see flow lines for the strike, but not lines like this.

That's exactly what it is. I agree that, added to the red flags mentioned in this thread, it's another cause to condemn the coin. However, be aware that guidelines can be seen in genuine examples too on occasion, particularly circles inscribed to help the engravers.

Such circles were often used on dies for later Parthian drachms, so the die cutters knew where to place the beads of the borders. From an Artabanos II drachm of mine, for example:


A line below, used not for engraving motifs, but rather for die alignment in this example from Ancient Joe at Cointalk:


And an example from Martin (maridvnvm), posted at Cointalk...the circle used as a guide for the engraver of the legend:

Dave the thought crossed my mind but I wouldn't think the die cutter would leave those lines on the finished die. I use to seeing lathe lines on large Ptolemy coins but those are different from these. I really have no explanation for them, however Bob's explanation does make sense. I wish David Sear was a member he would know the answer.

While I don't have a reference for this next statement I would highly doubt any ancient silver coin is 100% silver ever. A couple of years back someone let me play with a handheld XRF instrument and I scanned so many coins I had at a show I was selling at. Ancient ores are so random, impressively so, for trace elements. Only something modern would be that fine silver. My opinion only of course.

Two more things condemn it as fake. Look at the crossbars on his throne. They are not precisely horizontal. They almost look as if drawn with perspective. That never happens on genuine Alexanders. Also, the upper torso is too frontal.