Your list may be expanded to between about forty and fifty, perhaps more.
I will have to check, but there are a great many claimants to the throne who
never (as far as anyone knows) proceeded to strike coins in their own name.
[edit:
I just had a very quick review of my notes, and the list may number well
into three figures]
You could probably add
Aureolus to your list, even though he struck coins in
the name of
Postumus. All examples allegedly in
his name have so far been
deemed to be false/fake/etc.
Have a read of the SHA (Scriptores Historiae
Augustae) for an overview of the
period covered in those volumes, and many other ancient authors such as Dio,
Suetonius, Ammianus Marcellinus,
Herodian,
Tacitus, Zosimus, etc., etc.
Alternatively, wait until I (eventually) publish my own
work (whenever that may
be!), and read that to your heart's desire. You may have even motivated me
to go back and do some more
work on this ever-expanding volume, including
compiling a more-or-less "full" list of usurpers, etc.
(rather than simply recording
them in file/sequence).
- Walter
P.S. Ingenuus has two "u"s, and may also be spelled "Ingebus" depending on
the source. It was
Macrianus Senior who is believed not to have
had any coins
struck in
his own name, instead striking in the (same) name of
his son, Junior.
FYI:
Aureolus was the general who defeated both
Macrianus Snr & Jnr.