Elagabalus, AE29 of Calchedon, Bithynia-Pontus, AD 218-222. 14.75 g. 

M AYRH ANTWNINOC AYG, laureate, draped and cuirassed bust right.
KALXADONIWN, serpent-entwined tripod.

RecGen 96; Türkoglu RI57; Weber 4856; SNG von Aulock 6995

Contributed by Burak of Kayser-i Rum Numismatics, Sept. 2019.