Severus Alexander, contemporary imitation ("limes falsum"), 222-228 AD. and later,
Æ Denarius (18-20 mm / 3,25 g),
Obv.: IMP C M AVR SEV ALEXAND AVG , laureate, draped, and cuirassed bust of Severus Alexander right, seen from behind.
Rev.: PROVID [DEO]RVM , Providentia standing l., holding wand over globe and leaning on long scepter.
for prototype, cf. RIC 294 ; - Coh. 495 .
Curtis Clay: "G. Elmer invented the term "limesfalsa", which is now usually applied to ancient casts of denarii."