Antoninus Pius AV Aureus. Rome, 145-147 AD. 

ANTONINVS AVG PIVS P P, bare-headed, draped bust right.
TR POT COS IIII, Roma seated left, holding Palladium and spear, 
shield leaning against seat. 

RIC 147; Cohen 936

With permission of Bank Leu, auction 93, lot 28.