Odd aureus with elements of Nero and Vespasian

[Jose N]

Hello. I'm looking for advice on identifying a coin. Unfortunately it is not mine and I could not photograph it. What struck me as odd is that I cannot find any similar type online.

In this case the emperor is Nero but the obverse has Pax seated left, holding a caduceus,  COS ITER TR POT. It is a type I can only find in some Vespasian aureus. I'm also wondering what the ITER portion means. COS I should be first year as a consul but what does the TER stand for?

It is, I guess, possible that this mix of characteristics means the coin is simply not genuine.

[shanxi]

I'm also wondering what the ITER portion means. COS I should be first year as a consul but what does the TER stand for?

Consul Iterum = "again" or "for the second time"

[Joe Sermarini]

Note the blue text.  COS ITER links to NumisWiki.

[Jose N]

I'm also wondering what the ITER portion means. COS I should be first year as a consul but what does the TER stand for?

Consul Iterum = "again" or "for the second time"

Thank you We still have iterum at the root of words like iteration but I didn't even though it might be an abbreviation of that. So I know that at least the legend makes sense, and if genuine the coin is from the years 57–58. A big if imho. Still I'm tempted to acquire it just to investigate the issue.

[curtislclay]

Even without seeing a picture, the odds are heavily in favor of the coin's being a modern concoction rather than an ancient mule (mint error) or ancient imitation. An ancient Indian imitation, however, might be a possibility.