Hadrian AV aureus, AD 117–138, struck AD 136. 7.35 g.

HADRIANVS AVG COS III PP, bare-headed, draped bust left.
NILVS, Nilus reclining left, holding cornucopiae and reed, and leaning left arm on sphinx. Hippopotamus standing right 
before him and crocodile over waves below. 

RIC 308; BMCRE 855; Biaggi 624 (this coin); Calicó 1290 (this coin). 
Very rare.

With permission of Numismatica Ars Classica auction 87, Lot 246, Oct. 2015.