As I write in the
Otho Gallery, the draped
bust dies are just dies, there is no evidence suggesting they should be treated separately. As all the coin
types of the first issue (
IMP M
OTHO,
RIC 3, 4, 7, 8, 13, 14, 15, 16, 17gold, 17) can share the same
obverse die, your find is not unexpected. The
Budapest museum has a
RIC 16 with draped
portrait, so if I can see an image of yours, I can tell if the dies are identical.
s.
Jyrki Muona