Carinus AE Antoninianus as Augustus. Siscia mint. 

IMP CM AVR CARINVS PF AVG, radiate, cuirassed bust right.

VOTA PVBLICA, Carinus, and Numerian stand facing each other sacrificing over the altar. mm21. 3.31g.

Mintmark SMSXXIB. RIC V-2, 315; Sear 12365.

From the Eichner Yosef collection.