Can you give a
weight for the coin?
If it is a forgery - that is if it was made by a forger for extra profit - then it will have a core from base metal. And with
good likelihood it would be much lighter than the official issue.
I would expect it to look very much like an official issue as long as the outer coating of silver is
intact. I would also expect the outer coating to be broken with the amount of wear the coin is showing. And certainly I would not expect the letter engraving as seen here. It would have raised immediate suspicion when put into circulation. With the general look of your coin I would not expect this to be a (
plated) ancient forgery.
A different case would be an imitation. A coin made from
good silver that was made by someone outside the
roman territory. This would not be a forgery but a
good coin worth its
weight in silver. It does not have to look exactly like any
roman denarius, but it copies the general design.
'
Celtic imitations' are fairly common for
republican denarii. But for all I know not for this design. And
still - while the general design just imitates but not completely copies a
denarius - the technology to engrave a letter should be the same. This is why I doubt the imitation as well.
Just two links for information on imitations of
republican denarii below:
http://www.academia.edu/1516327/Imitations_of_Republican_denarii_from_Moesia_and_Thracehttp://rrimitations.ancients.info/index.htmlHaving said all this - there are people on this
forum that can answer to this with much more authority. For some reason they did not jump onto this topic so far. Possibly it might
help to post this coin (and with a
weight) in the '
fake discussion' group as well.