Severus Alexander. Magnesia ad Meandrum, Ionia. AE18. 

M AVR ALEXANDROC, laureate, draped and cuirassed bust right. 
MAGNHTWN, Cista mystica with conical cover; around it a coiled serpent. 

BMC Ionia 69; SNG Cop 883.

With permission of Roma Numismatics, May, 2010