Caligula AE20 Semis of Segobriga, Spain. AD 37-41.  5.53 g. 

C CAESAR AVG GERMANICVS IMP, laureate head left.
SEGO BRIGA within wreath. 

RPC I 477; SNG Cop 632; BMC 1058-1059; Paris 755-756.

With permission of Dr. Busso Peus Nachfolger - Auctions 410-411, Lot 648, Oct. 2013.