Antoninus Pius, with Marcus Aurelius as Caesar. AD 138-161. 
<dl><dd>AR Denarius (18mm, 3.38 g, 1h). Rome mint. Struck AD 140-144.
<dl><dd><dl><dd>ANTONINUS AUG PI-US PP TR P COS III, Laureate head of Antoninus Pius right</dd>
<dd>AURELIUS CAES-AR AUG PIUS (?) COS, Bare head of Marcus Aurelius right. RIC III 417a; RSC 15.</dd></dl></dd></dl></dd></dl>
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