Trajan, AV aureus, Rome, Struck AD 107. 19 mm, 7.17 g. 

IMP TRAIANO AVG GER DAC P M TR P COS V P P, laureate head right, aegis on left shoulder.
S P Q R OPTIMO PRINCIPI in three lines within oak wreath. 

Woytek 224e; RIC 150 var (bust type); BMCRE 253-256 var (ditto); Cohen 581 var (ditto). 
Rare.

With permission of cngcoins.com, auction 318, lot 663, Jan. 2014.