Watch List notes:

ARABIA. Trajan. AD 98-117. AR Tridrachm or Tetradrachm (22mm, 10.64 g, 6h). Struck AD 112-114. Laureate bust right, wearing aegis / Cult image of Artemis of Perge within distyle temple with eagle in pediment. Metcalf, Tell Kalak –; RPC III 4070. VF, lightly toned.

Traditionally thought to be tridrachms, but more recently termed tetradrachms (see K. Butcher, "The silver coinage of Roman Arabia," Judaea and Rome in Coins 65 BCE-135 CE [London, 2012], p. 208).