Leg ii and leg iii appear to be reverse die matches to my eye.
Leg III and Leg V ? You guys have a better feel for these coins than I. If fake, and I don't doubt you, they look to be done by an experienced forger. Leg I has a nice edge split (at least in the photo).
Yes, my mistake - III and V.
As for edge spits, etc, larger splits can
still be
cast.
Fakes can also be struck from
cast dies, transfer dies, etc. These coins have other issues as well, such as
style,
patina, etc that match other known or suspected
fakes.
My general rule of thumb is to be very wary of all
Mark Antony legionary denarii. A very high percentage of the examples on the market today are suspect.