GERMANICUS, father of Caligula. Died 19 AD. Æ As (28mm, 11.19 gm, 7h). Rome mint. Struck under Caligula, 37/8 AD. GERMANICVS CAESAR. TI AVGVST F DIVI AVG N, bare head left; c/m: TI•CÆS IMP(?) in incuse / C. CAESAR AVG GERMANICVS PON M TR POT around large S C. RIC I 35 (Gaius); BMCRE 49 (Caligula); BN 73 (Caligula); Cohen 1. VF, dark olive patina. Interesting countermark.
This countermark does not appear in Martini nor Howgego. Both do list TI•CÆ as a common counterstamp employed in the area of Thrace or Moesia during the Flavian period.