Gaius Caligula, with Germanicus, Macedonia, Thessalonica, AD 37-41. Æ (20mm, 9.06g, 6h). KAIΣΑP ΘΕΣΣΑΛΟΝΙ…(sic), head of Gaius Caligula (?) l. R/ …. NIKΟΣ (sic), head of Germanicus (?) left. cf. Touratsoglou 1-2; RPC 1572.