Hadrian, AE dupondius, AD 117-138. 27 mm, 12.68 g, Struck AD 124-128. 

SALVS AVGVSTI around, COS III below, S-C across fields, Salus standing left by altar, holding patera and sceptre, feeding serpent rising from altar.
SALVS AVGVSTI around, COS III below, S-C across fields, Salus standing left by altar, holding patera and sceptre, feeding serpent rising from altar.

RIC 1010.
Very rare.

Sold by Stack's Bowers Galleries & Ponterio, sale 174, lot 5303, Jan. 2013.