I'm in doubt
.
The back of the
head of the
undertype does not look veiled to me.
Both
types of
Lysimacheia with a veiled Demeter (there are two, I didn't really understand which one you mean) are weighing more than the coin here (more than 6 g).
A lot of these Herakles/Nike coins are
overstruck on Apollo/tripod coins of Antiochos II Theos, but I think this isn't an option neither (again because of the back of the
head ).
But I have no idea which coin could be the
undertype here
.
Regards
Altamura