Rare Gordian III. anto?

[tibsi]

Hi!

Look this interesting Gordian III. anto! The obverse legend's last 'G' is missing.
Is this a legend error? The portrait is similar to young Elagabalus.
And what about mint? Rome, Antioch, Viminacium?
The main Gordian's expert Mr. Roger Bland from British Museum didn't find
any example like this.

Thanks,
Tibsi