This variant also not in Strack, who however lists your left-facing, draped, bare-headed bust type on four other Arrival sestertii of Hadrian, namely ADVENTVI AVG AFRICAE, GALLIAE, HISPANIAE, and ITALIAE, Strack 739, 749, 750, 751.
Please send a picture of your coin to Richard Abdy, Coins and Medals, British Museum, who is currently working on a new edition of RIC for Hadrian!